If it's Monday, it must be City Road, Angel, Islington
I work at City Road Therapy, 335 City Road, Islington, London EC1V 1LJ on Mondays from 12 midday to 9.30p.m. The nearest tube station is Angel. It's a lovely Georgian House with floor to ceiling windows.
If it's Wednesday it must be Gower Street, Central London
I work at 37-41, Gower Street, London WC1E 6HH (pictured above) from 11.15a.m. to 10p.m. each Wednesday. Goodge Street station is about a 2 minute walk away, then Warren Street, Russell Square and Tottenham Court Road stations are about a 10 minute walk.