Hi I don't know where you are in Hampshire but I go to a club on a Monday and Wednesday evening in Basingstoke - you just turn up and pay £2 each time you run.
Mondays is specific training and Wednesday is split up into either 2, 4 or 6 mile runs whichever you feel you want to do. Have a look at www.220training.co.uk and that will give all the details.
HTH
Nadine