Glas Architects’ first building will bring a smile to the faces of frustrated south London commuters.

Passengers on trains rumbling in and out of London Bridge Station have long endured inexplicable halts in one of the capital’s most dismal cityscapes. Now, though, this playful new office building right beside the viaduct will offer some light relief during those delays.

The £850 000 office is the first completed project by young London practice Glas Architects. Called No 1 Fellmongers Path, the building’s form is a response to its railway neighbour. Timber cladding and louvres set against grey render are inspired by old railway freight carriages and the elongated windows match the proportions of those on commuter trains.

Containing 900 m2 of office space and costing £944/m2, the building has been constructed on the existing foundations and ground floor columns of a leather tannery that previously occupied the site. The naturally ventilated offices open on to a central courtyard, where sliding doors are shielded by a movable brise soleil.

J&K Builders was client and developer for the building, which is currently being fitted out as the headquarters of the Royal Society of Osteopaths.