Dr Bike will be on campus today to fix student and staff bikes. A professional mechanic will check over your bike for any maintenance issues, entirely for free. They will then fix them on the spot (or if it's a bigger job they'll write note of the problem so you can get it fixed at a bike shop more easily).
No need to book - just turn up and drop in! Service is first-come-first served, but if you leave your mobile number and name then you can drop your bike off and collect it later once it's finished.
You can find Dr Bike outside the secure bike store, on the west side of the campus.