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5 min readMay 11, 2026

KC's Lockton Signs Largest London Office Deal of 2026

KC's Lockton Signs Largest London Office Deal of 2026
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Kansas City's Lockton, the world's largest independent insurance broker, has secured London's biggest office pre-lease of 2026, a 250,000 sq ft space.

The 250,000 sq ft deal nearly doubles the insurance giant's UK capital footprint, signaling a major global expansion.

Lockton Makes Record-Breaking Move in London

Kansas City-based Lockton, the world's largest independent insurance broker, has solidified its global growth strategy by signing the largest office pre-lease in the City of London for 2026. The company will be the sole occupant of 'The Mark,' a new 250,000-square-foot Grade A office development at 47-50 Mark Lane. The deal, announced last week, represents a significant international expansion for the prominent KC firm. The development is being delivered by a joint venture between Benson Elliot, a MetLife Investment Management company, and Hobart Capital Partners. This landmark transaction underscores Lockton's commitment to the London insurance market and its ambitious future.

A New Landmark HQ: 'The Mark'

The new headquarters, 'The Mark,' is a state-of-the-art, 12-story building with a value of £400M, according to Bisnow. Designed by 3XN & Orms, the development boasts a prominent location with views of the Tower of London and Tower Bridge. The building is targeting top-tier sustainability credentials, including BREEAM Outstanding, EPC A, and WELL Platinum ratings. Lockton's official announcement notes that the new space will serve as the London headquarters for its international regions, supporting all businesses outside of North America. The London office of Lockton Re, the company's global reinsurance business, will also relocate to the new building upon its completion.

Illustration related to Lockton celebrates deal to become sole occupant of landmark new London office development | Lockton
The new 12-story 'The Mark' building will serve as Lockton's new international headquarters in London.

The Kansas City Connection: A Global Statement

For Kansas City, Lockton's expansion is more than a real estate transaction; it's a powerful statement about the global reach and ambition of a hometown corporate giant. This move demonstrates that KC-based companies are not just leaders in the American heartland, but major players on the world stage. EJ Hentenaar, CEO of Lockton Europe, emphasized the strategic importance of the move in a statement. "This is an exciting milestone for Lockton and a significant investment in our future," Hentenaar said, according to Estates Gazette. "It reflects the support we have from our clients, the talent we continue to attract, and our shared belief... on the importance of having a strong, independent broker in the heart of the vital London insurance market."

Lockton's London Leap: St Botolph vs. The Mark

MetricCurrent Office (St Botolph Building)New HQ (The Mark)
Size~130,000 sq ft~250,000 sq ft
OccupancyPartial TenantSole Occupant
Tenure Since2010Est. 2029
Building ClassGrade ABest-in-Class Grade A
SustainabilityStandardBREEAM Outstanding, WELL Platinum

What's Next: Market Impact and Timeline

The full pre-let of a major development years ahead of completion is a strong vote of confidence in the London office market, especially for high-quality, sustainable buildings. James Jakeman, senior partner at Benson Elliot, called the deal "a defining outcome" that reflects the asset's strength. With practical completion targeted for the first quarter of 2029, the focus now shifts to the delivery of the £400M project. Meanwhile, the market will be watching how Deka, the owner of Lockton's current home at the St Botolph Building, moves to fill the significant 130,000 sq ft vacancy that will open upon Lockton's departure. The transaction was advised by Knight Frank for the joint venture, with Newmark and Savills advising Lockton, as reported by Insurance Edge.

Illustration related to Benson Elliot Snags Huge Pre-Let At £400M London Office
The £400M 'The Mark' development was fully pre-let to Lockton ahead of construction completion, a significant event in the London real estate market.

Q: What is 'The Mark' building?

A: 'The Mark' is a new 12-story, 250,000 sq ft Grade A office development at 47-50 Mark Lane in the City of London. Lockton will be its sole occupant.

Q: How large is this new office compared to Lockton's current one?

A: The new office is approximately 250,000 sq ft, nearly doubling Lockton's current London footprint of about 130,000 sq ft in the St Botolph Building.

Q: When will Lockton move into the new building?

A: The practical completion of 'The Mark' and Lockton's subsequent move-in are targeted for the first quarter of 2029.

Q: Why is this deal significant for Kansas City?

A: It highlights the global strength and ambition of a major Kansas City-headquartered company, enhancing the city's reputation as a hub for international business leaders.

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