Bb Brighton What Shops In Brighton To Worthing In West Sussex Sell Bb Guns And Gas Guns Etc?? HELP?

What shops in Brighton to Worthing in west sussex sell bb guns and gas guns etc?? HELP? - bb brighton

I can not find anywhere that sell BB guns because I want to buy a gas gun, which seems realistic ... Website does not help me ... any store that sells things like Worthing Brighton?