Since the refurb, Oxford Brookes Gym is probably one of the best in Oxford as it is affordable and offers a diverse range of equipment. The Conditioning Centre is amazing. Bumper plates for Olympic lifting, pull up and dip bars, kettle bells, dum bells, cable machines. Admittedly it is a little small and gets very busy in the usual peak hours, but they do regulate the gym entries to make sure it is still safe. For the price and quality, I would reccomend any serious lifter to go and check it out. But avoid peak times between 5-9 most evenings.