Haggerston have hire bikes too I'm pretty sure...
Also, if a couple ofyou have BMX's you could always take it in turns... small pump style tracks such as mile end are too small for more than a couple of folks so you could switch bikes while supping red stripes (we/myself and my friends, prefer to ride with a beer in hand).
Ha! Yesterday I was saying that a beer beforehand, just the one mind would have been the perfect tonic to take the edge of the absolutely terrifying experience of going round the baby nursery track :D
Haggerston have hire bikes too I'm pretty sure...
Also, if a couple ofyou have BMX's you could always take it in turns... small pump style tracks such as mile end are too small for more than a couple of folks so you could switch bikes while supping red stripes (we/myself and my friends, prefer to ride with a beer in hand).