The Cathedral and the Amigo Hall are very easily accessible by public transport in central London.

The Cathedral and the Amigo Hall main entrances are in Lambeth Road, (SE1 6HR).  Please see the map below for the precise location. 

The Cathedral is a short walk from Lambeth North Underground Station (Bakerloo Line), and London Waterloo, Southwark and Elephant & Castle stations are also nearby and within 10-15 minutes walk.  Numerous buses serve the area.