Jane,
I've managed to have a quick look at the transcription of 145, Chesterton Rd., Cambridge in the 1891 Census at the CCRO today. There are one or two tiny discrepancies between this version and Andrew's (he must have been referring to the original, so his is probably more accurate). However, it's always good to have a different slant and make up your own mind based on what you might already know yourself...
John Reynolds WARDALE H M 32 Lecturer in Classics b. Orcheston St. Mary Wilts
Alice E.V.WARDALE Wife M 24 born Swansea, Glamorgan
Nora G. WARDALE Daugh 2 b. Cambridge, Chesterton
Annie Maria GENTLE Servant S 20 Cook (Domestic) b. Barrington, Cambs
Minnie E. Clements Servant S 19 b. Ashwell, Cambs.
As Andrew says, 147 was uninhabited; so were no.'s 153, 157 and 161. I looked nearby for a pharmacist's or chemist's but could find no sign of one...
Then, on my way to my lift further along Chesterton Rd., practically opposite 188, where Andrew used to live, I took about 5 amateurish shots of number 145. So if you'd like to PM me with your e-mail address (I've probably already got it safely somewhere, but presently mis-placed), then I'll send you the snaps...
very best wishes,
Keith
p.s. The household was very clearly in a book entitled "St Luke's, Cambridge", so no doubt about which parish now.