Hello Bluestocking
Do you mean Oxford, England? I have been living south of it and working there for 18 years and there are quite a fair bit of bookshops. 21 years ago, when I came from France to live in this country, they were more secondhand bookshops than nowadays, and for a few years a Border's bookshop though.
But, near where I'm working, which is fairly central, there is a 3 pounds bookshop, opened late last year and doubled up as a second hand bookshop which can spring up some nice suprises.
Also, not far from there, we have an Oxfam Charity bookshop with a few SFF shelves, other languages (French rather well represented) and a good travel writing section.
There is still a big blackwell's bookshop, Waterstone and another Oxfam bookshop and another '3 pounds' bookshop.
However, I always miss the bookshops from where I come from, Bordeaux. In the 1990's, there was a plethora of them, which, unfortunately for many, don't exist anymore and with always a fairly good selection of SFF. And there was a specialised SFF bookshop until the millenium but helas closed down!