St Augustine's church is located at One Tree Hill, Honor Oak Park, London, SE23 3LE.
The nearest station is Honor Oak Park which is accessible from London Bridge as well as now being on the new London overground system. Local buses are P4 (Lewisham to Brixton) and P12 (Honor Oak Park to Surrey Quays). As you exit the station turn right and walk up the hill, its about a five minute walk to the church which is on the right hand side of the road.
Here is a link to a map
http://www.streetmap.co.uk/map.srf?X=535591&Y=174033&A=Y&Z=110