In essex we have a number of companies (non fishing) that sell boilies one such farm shop called marriages i would recommend .they are in chelmsford (on the one way system next door to tescos )and i think a kilo of boilies are £8 another shop (tackle ) which i can recommend also is in Russel way chelmsford.Big fish tackle and they are opened 7 days a week. they will be haveing a late opening once a week. please check for details.. not shure if marriages are open sundays but are open the rest of the week. Neither shop does deals on large amounts. But at those prices you can go wrong particular when you want a couple of kilos at a time. (maybe worht giving them a ring anyway)