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Marcus O'Brien Consultant UK Sotheby's International Realty

Over the course of the past decade, Marcus has successfully transacted on several record-breaking and remarkable deals. He is the only broker in history to have acted on the three most expensive residential transactions ever recorded, including the most valuable private residential sale ever completed globally. He also signed the most significant rental contract in British history.

Marcus has an enviable reputation amongst a select group of ultra-high-net-worth clients. He is consistently entrusted by the leading private banks, family offices and law firms to act for their clients discreetly while adding genuine value and expertise.

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Wimbledon is a highly sought-after area in southwest London, primarily celebrated as the global stage for the world’s most prestigious tennis championship. Beyond its inescapable tennis renown, the neighbourhood is admired for its lush verdure, reputed schools, and prime real estate offerings.



Discover Bayswater: a vibrant London area with rich history, diverse dining, top schools, green spaces, and exciting new developments. Explore its unique charm and luxury living.

Bayswater

Notting Hill is a community characterised by boutiques, antiques and pastel-toned façades. The neighbourhood has a storied history, which is reflected by the timeless elegance of its leafy streets and stucco-fronted properties.



Discover Surrey's charm: vibrant communities, historic landmarks, excellent schools, top dining spots, and stunning properties just an hour from London.

Primrose Hill is an upmarket area in North London that has a wonderful blend of impressive architecture, boutique shops, fantastic cafes and restaurants, and a village-like atmosphere. Arguably the area’s most notable feature is the park which is found at its heart.



Primrose Hill

Fitzrovia is one of prime central London’s most impressive districts with a rich history, and glorious architecture, conveniently located close to the West End and the beating cultural heart of the city. The streets are peppered with restaurants, cafes, businesses and bars, and some of London’s finest Georgian architecture.



Fitzrovia

Explore Regent's Park: a blend of royal history, luxury homes, top dining, and iconic landmarks like London Zoo and Primrose Hill. London's prestigious green space

Regent's Park

St James’s, named after its eponymous royal palace, is a fascinating area in the heart of London. Known as ‘clubland’ to Londoners, due to its abundance of members clubs, the area is characterised by prestigious landmarks, world-class restaurants, and stunning architecture.



St James's

Ascot, best known for its famous racecourse, sits in a particularly green stretch of Berkshire where woodland, heathland, and royal parkland shape the landscape.

Ascot

Explore Oxford: a city blending medieval charm with modern living. Home to the University of Oxford, rich history, vibrant culture, and diverse property options.

Oxford

The Cotswolds: Experience quintessential rural England with honey-hued houses, rolling hills, charming villages, fine dining, cultural landmarks, and luxury country living.

Lying in the leafy expanse of North London, commonly referred to as Hampstead Village, Hampstead stretches northward to Hampstead Garden Suburbs, sharing borders with St. John’s Wood to the south and neighbouring Highgate to the east.


Hampstead

Situated by the River Thames and enveloped by green open spaces, Putney is one of southwest London’s most sought-after neighbourhoods.



Marylebone is one of London’s prettiest and oldest areas – its evolution spans from royal deer parks and country estates to grand redbrick buildings. Today, its beautiful architecture is coupled with its trendy high street known for its heritage brands, quirky shops, and electric atmosphere.

Set along River Wey in the Surrey countryside, Weybridge is among the Home Counties' most prestigious addresses.



Weybridge

Soho, London: A vibrant district rich in history and charm, known for its dining, nightlife, and thriving real estate market. Discover luxury living in the heart of the city.

Soho

South Kensington: Coveted London neighborhood offering luxury homes, top schools, world-class shopping, dining, and cultural landmarks like the V&A and Natural History Museum.

South Kensington

For those looking to step back from the pace of London without losing touch with it entirely, Esher remains one of Surrey’s most enduring choices.



Esher

Kingston

Holland Park represents an exquisite blend of natural beauty, historic charm, and modern convenience, renowned for its tranquillity, with ample opportunities to relax, shop, and dine without venturing too far from home.



Chiswick

Nestled along the banks of the River Thames in South West London, you will find the idyllic Barnes. The area is much loved by families and offers a wonderful blend of convenience thanks to its proximity to central London, as well as a village-like feel.



Barnes

Residing on the Southern banks of the River Thames, Wandsworth has long been an area of London favoured by families, young professionals, and couples, thanks to its lively streets anchored by hip brunch spots, cafes, eclectic indie boutiques, and large Victorian houses as well as being mere moments from the Thames.



Tucked away between the refined sophistication of Hampstead and the dynamic Camden, Belsize Park is a lovely corner of North London. Known for its architectural patchwork of styles, Belsize Park has a collection of some of London’s finest buildings.



Belsize Park

Kensington is one part of the Royal Borough of Kensington & Chelsea, a highly sought-after area in Prime Central London for super prime residences. The district offers a vibrant atmosphere defined by beautiful architecture, world-class shopping, famous museums, stunning galleries and two Royal Parks.

Not just one of the Capital’s smiliest areas – Richmond was named London's happiest borough and the second nationally – but arguably one of its prettiest, Richmond’s riverbank position is paired with a village-like charm that casts a spell on anyone who visits.



Explore Covent Garden: London's cultural epicentre with historic landmarks, luxury living, world-class dining, and vibrant arts scene, making it a sought-after residential area.

Explore Berkshire: Royal castles, Michelin-starred dining, thrilling horse racing, and serene gardens. Discover history, flavor, and adventure in this quintessential home county.

Berkshire

Pimlico, a charming neighbourhood in the heart of the City of Westminster, is one of London’s best-kept secrets. Known for its pretty garden squares, elegant architecture, and a strong sense of community, Pimlico's is a small but perfectly formed area that was designed by the master builder Thomas Cubitt.





Pimlico

Cobham sits on the banks of the River Mole in Surrey, around 20 miles south-west of London.



Cobham

Walton-on-Thames sits along a broad stretch of the River Thames in Elmbridge, positioned between Weybridge, Esher and Hampton Court.



Walton-on-Thames

Ealing sits to the west of central London and has long been one of those places people move to and stay.

Ealing

To own a luxury property in Belgravia is to find yourself amongst the most elite members
of society, surrounded by neighbours who recognise the immense value of this prestigious
residential area.

Wentworth's reputation as one of Europe's most prestigious residential estates is well over a hundred years in the making.

Wentworth

Fulham is a pocket of southwest London where the Thames glides past Victorian townhouses and tree-lined avenues, and where a morning coffee by the river tastes better.



Hammersmith

Westminster, one of the most iconic areas of London, is known for being the epicentre of the UK’s political power since the first official Parliament of England convened here in 1295.



Westminster

With their period detailing and generous sizes, the luxury homes of St John’s Wood are a huge draw for discerning families from all over the world who want to live in the height of luxury surrounded by excellent schools, quaint cafes and attractions like Abby Road, Lord’s Cricket Ground and Regent’s Park.

St John's Wood

Defined by its artistic legacy, excellent shopping and diverse range of luxury properties,
Chelsea is the ideal destination for those looking for a deluxe lifestyle in Prime Central London.

Part of the Royal Borough of Kingston upon Thames, Coombe sits between Wimbledon, Kingston, Richmond Park and New Malden.

Coombe

With its historic attractions and sophisticated tree-lined streets, Knightsbridge continues to be one of the most sought-after areas of Prime Central London for luxury real estate, from its listed buildings to its modern serviced residences.

Knightsbridge

Hyde Park sits at the centre of one of London’s most established and desirable residential areas, where grand stucco terraces, garden squares and mews houses surround one of the capital’s best-known green spaces.


Hyde Park

Oxshott is a charming village nestled in the heart of Elmbridge, sitting quietly between the bustling towns of Esher and Leatherhead.



Oxshott

Whether you seek a peaceful retreat or a dynamic urban lifestyle, Buckinghamshire will exceed your expectations. Here’s our guide to exploring all that this enchanting county has to offer.

Buckinghamshire

An elite melting pot of fine dining restaurants, dazzling theatres, designer boutiques, five-
star hotels and private member clubs, Mayfair is a haven for wealthy individuals who like to
prioritise the finer things in life.

Hidden in the heart of central London, Connaught Village is just a stone’s throw from the bustling streets of Oxford Street and the serene expanses of Hyde Park. This elegant neighbourhood captures the essence of what makes London’s village-like pockets so special.



Connaught Village

Situated on the top floor of one of Chelsea’s most discreet and prestigious residential buildings, this exceptional penthouse extends to approximately 7,000 sq ft, with two self-contained studio apartments on the lower ground floor bringing the total accommodation to over 8,000 sq ft. Recently refurbished, it combines rare lateral scale and exceptional ceiling heights with a carefully resolved layout and a west-facing roof terrace that runs the full length of the apartment.

 

The principal living space stretches to almost 60 ft, the open-plan reception, dining and kitchen area is designed for entertaining on a grand scale, while still feeling composed and liveable. Full-height glazing draws light across the plan and opens directly onto the terrace, where there is ample room for dining, seating and a barbecue, all set against long views over Chelsea’s rooftops.

 

The bedroom accommodation is positioned away from the main entertaining areas, giving the plan a sense of balance and privacy. The principal suite is generous with a large bathroom and extensive dressing space. Two further bedrooms are well-proportioned and supported by additional bathrooms, all finished to a high standard.

 

A series of ancillary rooms adds a level of flexibility that is rarely found in lateral apartments of this scale. A separate library and games room along with a private office and gym allow the apartment to adapt easily to different ways of living without compromising the clarity of the main spaces. These rooms add a level of flexibility that is rarely found in lateral apartments of this scale and some can be changed into further bedroom suites if required.

 

On the lower ground floor, two self-contained studio apartments provide ideal accommodation for staff, guests or independent working, allowing the main residence to remain entirely private. The property also benefits from two lock-up garages, additional private parking and access to a large landscaped communal garden for residents.

 

21 Manresa Road is regarded as one of the most sought-after addresses in Chelsea, with only a small number of apartments arranged across two entrances. The building offers 24-hour concierge and security, a full-time manager, underground parking and lift access directly to the apartment, combining discretion with a high level of service.

 

Positioned just off the King’s Road, the location places some of Chelsea’s best restaurants, boutiques and galleries within easy reach. Pavilion Road’s independent food shops and cafés are close by, while Sloane Square and South Kensington offer a wider cultural and transport network. Despite its centrality, the building remains notably calm and private, with a sense of remove that is increasingly rare in this part of London.

Floorplan

A Chelsea Penthouse with a Roof Terrace and Two Studio Apartments

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Set on one of Chelsea’s most desirable streets, moments from the King’s Road, this remarkable six-bedroom home spans six floors and has been beautifully reconfigured to maximise natural light and space. The property offers six bathrooms and three additional WCs, providing exceptional convenience for a house of this scale.

Completed in 2016, the renovation introduced underfloor heating throughout and comprehensive security, while interiors were entrusted to Axel Vervoordt. Known internationally for his eponymous gallery, Vervoordt has imbued the house with his signature aesthetic: natural materials, refined proportions, and bespoke pieces that blur the line between furniture and art.

Inside, the tone is set by stone fireplaces in the entertaining rooms and a professional-grade Boffi kitchen, fitted with two oversized Sub-Zero refrigerators, additional freezer space, a wine cellar, and Gaggenau appliances beneath a dramatic commercial hood. The principal reception rooms are both voluminous and light-filled, their gallery-quality lighting calibrated for displaying art.

Accommodation is versatile, with six bedrooms and six bathrooms arranged across the upper floors. At basement level, an independent suite with its own kitchenette and two bathrooms provides privacy for guests or staff. The lower ground also houses a sound-proofed projection room seating ten, a home gym with ballet barre and steam shower, and a climate-controlled wine vault with capacity for two hundred bottles.

Outdoor spaces are equally considered. The house itself has a rooftop garden planted with mature trees and shrubs, served by an automated irrigation system and complete with a built-in barbecue. There is access to the gated communal garden of Ormonde Gate, as well as membership to the adjoining Burton Court gardens and tennis courts, a rare privilege in Chelsea, particularly prized by dog-owners.

Security and practicality underpin the sense of ease: CCTV, police-linked panic buttons on every floor and a functioning alarm system are all in place.

Ormonde Gate occupies a prestigious residential pocket of Chelsea, where handsome red-brick houses and apartments line tree-shaded streets. From here, the King’s Road unfolds with its blend of designer boutiques, cafés and restaurants, while Sloane Square and the Saatchi Gallery are a short walk away.

Elegant Chelsea Townhouse Overlooking Burton Court

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Arranged across 5,456 sq. ft., this exceptionally wide, double-width Grade II-listed home is a rare find. It dates back to the mid-19th century and has been sympathetically renovated to preserve its historic integrity while embracing contemporary architectural finesse. It boasts grand proportions, ornate features, and wonderful leisure amenities spanning a cinema, gym, and steam room. An internal lift services all six floors. The house is crowned by a stunning roof terrace, providing a wonderful alfresco retreat.
 
Upon entry to the raised ground floor is a distinguished entrance hall with beautiful tiling and a feature staircase. It leads left via double doors to the elegant dining room. A state-of-the-art kitchen sits just beyond, fitted with Gaggenau appliances and sleek cabinetry. The reception is located on the first floor, stretching the full width of the house and opening onto a charming balcony, with a study positioned adjacent. The main living rooms have 11-foot-high ceilings trimmed by intricate cornices, along with bay windows and fireplaces. 
 
The lower ground floor houses the leisure complex, with the gym, cutting-edge home cinema, and steam room, alongside a bedroom suite. Three charming patios are also located here, providing private outdoor spaces that flood the area with natural light.
 
The second and third floors host a primary bedroom each, complete with a luxurious ensuite bathroom and a spacious dressing room. Two further bedrooms, one with an ensuite and a dressing room, occupy the fourth floor.
 
Impeccably finished and interior-designed, a palette of vivid hues and rich materials features throughout. Marble finishings, fireplaces, and magnificent cornices reflect its period grandeur.
 
This storied home holds a prime position on Lyall Street, in the very heart of Belgravia. The exclusive shopping and dining offerings of Elizabeth Street, Motcomb Street, and Sloane Street are moments away, as is the iconic Harrods. The picturesque expanses of Hyde Park are also close at hand.
 
 