i want buy some wyandottes

The Wernlas Collection in Shropshire send chickens all over Europe so will definitely deliver to Norwich. They only sell pure breeds and certainly have wyandottes. They are not cheap but they are good - my parents have bought all of their chickens over a period of 21 years from them 0 and our very first purchase way back then included a trio of wyandottes! The delivery costs £40 I think no matter how many chickens or where in Britain the delivery is being made to. You may have to wait for the requisite chickens to hatch though.

Good luck!