Supplement Advice in UK

Yo guys just wondering im over in the uk loving all the forums! ive been taking Surge Recovery for about 4 months now loving the reults but just not loving the £50-£70 per tub, i want to start more Biotest supps any idea on where to get them from or which ones would be good!! at the moment i am 75 kg 5 ft 8 so not very heavy wanna now pack some size on! ANY IDEASS???