Harbour Hotels has confirmed everyone at the Richmond Harbour Hotel Spa was safely evacuated, with fire crews called to the scene at around 6.30pm.
In total, 15 fire engines attended with more than 100 firefighters fighting the flames. Work to quell the blaze continued into Wednesday morning (1 May).
The hotel operator said while the cause was yet known, maintenance was being carried out on the roof by external contractors. It also thanked London Fire Brigade (LFB) for its efforts to contain the fire largely to the spa, which is situated in a separate annexe.
