The best restaurants serving French food in Hillside Merton London

Absolutely appalling setup they have here. My girlfriend's family are American so they recommended I visit a blues jam in London and saw this one every Saturday. Firstly the venue seems to be in a wider complex with overpriced food stalls, to get in to the whole place you have to have a bag search and they told me they needed to take my drinks bottle which contained insulin. I tried to explain that I need to keep it with me and the security man didnt want to know (I dont think he understood what I was saying either), all he said was he'll give me a ticket and I can collect afterwards. How pathetic can a venue be to want to take everyones drinks away, even water, so to buy £7 drinks inside? No decent pub or bar does that even in London. We spoke to another couple and they agreed they wont be comming again and the place seems to be full of 'once visit' tourist or trendy types that you rarely see twice. If they relax the security taking your bottles from you and be realistic with the prices then I may come back as the Blues jam itself was pretty decent. What a shame the management is pretty poor, definately not recommended.