Used a few companies, hop shop ,plymouth are good, as is homebrewshop in Farnborough ( used these a lot when lived in Woking! I went on to Art of brewing but sadly in my opinion when they were took over, lost the plot! I found this site burnleyhomebrew.co.uk. use them everytime, great service, always had next day delivery with free del over 60 quid I think, never looked as I always blow over a 100!!