Hi, I live in the area and also used to live in Bromley. Plaistow is just to the north of Bromley and would be, at most, two miles from either Lee or Eltham. The name is pronounced Play-stoh, as opposed to Plar-stoh in East London. Look for Burn Ash Road on google maps, follow this south to Grove Park Station then Sundridge Park Station. Plaistow is in the vicinity of Sundridge Park Station.