just throwing a bunch of pedals on your guitar wont make you better, maybe cover up a few mistakes, but the best way to improve sound is to get good. that being said, if you don't have much money, you could get an older used mutieffects pedal. i got an RP2000 for 75 american dollars, dunno what that is in pounds, but you could probally look online and find some for around 100 us dollars. it has everything pretty much, pickup simulator (single coil to humbucker and vice versa) compresser, wahwah, amp modeling, eq, reverb, delay, and a bunch of different effects.