SB,
Did actually try finding the engine fitter, James V. Perry, aged 52, in the 1881 Census for Greenwich. He was living at 5, East Street, and next door, at no. 4 East Street were the households of Charles LADGROVE, aged 85 and his wife Caroline aged 60; Charles was a pensioner. Also at the same address was Joseph EDSLEY aged 71 and his wife Fanny aged 72; Joseph is "Pensioned Civil Service". The numbers in this street are numbered consecutively, and I have no idea whether this number 4, East Street might correspond to the residence you are trying to trace...
keith
And when I tiptoed the other way down the street, I discovered next to Number 2, East Street, the Roan School with the caretaker living there with his wife, and his sister who was called Temperance Ann BELL. I think I've had a whisky too many, as perhaps Temperance Brewer (whom I mentioned earlier) was actually a person. I think I'll retire to bed. You really do need to exactly count how many houses there are between the Roan School and the dwelling you're interested in next time you're in Greenwich...