Historical version 3 of Oxford Cycle Workshop
The Oxford Cycle Workshop is more than just a bike shop. They will sell you bikes (new and refurbished) or parts, and do a very good job of servicing your bike for you, but this is a place where passion is more important than business.
As well as acting as a gathering point for Oxford cyclists, and a distributor of information on safe cycling, they provide a membership scheme. For an annual fee of £25 (£15 for the unwaged), you get four free lessons in cycle maintenance (though these are often overbooked and run monthly, so get your name down quickly!), a 20% discount on all items in stock and 10% discount on anything ordered in, access to their workshop and use of their tools for a very reasonable rate, discounted one-on-one training, access to further courses such as wheel building, and a monthly e-mail newsletter.
The staff are both knowledgeable and friendly, and their website is full of information. If you're a cyclist in Oxford for any length of time, you should be a member here.