Nearby tube stations include Vauxhall (10 minute walk), Kennington (15 minute walk), Lambeth North (15 minute walk), and Westminster (20 minute walk).
Tube
Tottenham Court Road to Kennington (Northern line) then ~ 15 minute walk to reception venue or
Tottenham Court Road to Oxford Circus (Central line) and then Oxford Circus to Vauxhall (Victoria line) then ~ 10 minute walk to the Reception venue