Ironically, I am anaemic before I became a vegetarian, and a combination of eating healthier and being mroe aware of what I ate after becoming a vegetarian meant in the 11+ years I’ve been a vegetarian this hasn’t been a problem.
What I don’t miss, like you, is bacon. I never have to be honest. I never really have, and over the years these things seem to get much easier, mainly because I started to forget whether I actually liked them in the first place!
What I do miss, is choice when eating out. Granted I became vegetarian at 13/14 so I hadn’t ever eaten out *much* (for example, I’ve never even tried steak and many other meat dishes). However, I don’t know about Oxford, but in Leicester there are a couple (not many) of excellent vegetarian cafes/restaurants which I have come to love and become a loyal customer of.