Old Session House, 23 Clerkenwell Green

Serviced offices at Old Sessions House deliver one of the most distinctive flexible workspace offers in Clerkenwell, EC1R. Knotel has restored a Grade II* listed Georgian courthouse into a design-led work club where private office suites sit alongside a full amenity programme, giving established teams a headquarters address with hotel-standard service built in. The setting suits creative agencies, consultancies, and professional services firms that want character rather than a corporate box. Suites scale from compact team rooms to floors carrying more than one hundred desks, so occupiers can expand within the same address rather than relocating.

Farringdon station sits three minutes away on foot, putting the Elizabeth line, Thameslink, and four Underground lines within reach of the front door. That connectivity places clients across the City, the West End, and Heathrow within an easy journey of the building.

Completed in 1782 to a classical design by Thomas Rogers, the building rises over principal floors beneath a twenty-metre glass dome, with Ionic columns, original pine floors, and stripped plaster walls left deliberately exposed. Twenty-three individually designed rooms run from the chandelier-lit Great Room to a courtroom bar, a curated library, and a billiards room, so the interior works as hard for client entertaining as it does for focused output.

Occupiers take all-inclusive access to bookable meeting rooms, acoustic phone booths, a staffed reception, superfast Wi-Fi, and fully furnished offices, alongside an onsite restaurant and cocktail bar. A rooftop terrace crowns the building with panoramic views and a heated infinity pool, an amenity rare among London workspaces and rarer still on a listed roof. Year-round member programming, from workshops to mixers, keeps the community connected and gives smaller teams a network they would otherwise pay to join. Clerkenwell Design Week, a dense cluster of studios, and a strong independent restaurant scene make the surrounding streets an asset for recruitment and for client visits alike.

Private office suites are licensed on flexible monthly terms, with business rates, utilities, cleaning, building management, and full work club membership consolidated into a single inclusive figure. Every suite arrives fully fitted and cabled, ready for occupation from day one with no fit-out spend and no dilapidations exposure. Ground-floor space is available now from £23,500 per month, equivalent to £250 per sq ft, with immediate occupation for teams of up to 22 and no capital outlay or long lease commitment required. Terms start from a single month and roll thereafter, and membership access to the rooftop, lounge, library, and event rooms carries no additional charge. Availability at this address turns over quickly, and viewings can be booked at short notice. Enquire through CityFlex today to arrange a viewing.