How to report a doorman/bouncer in the UK?

Last night my friends and I went to a club for metal/rock music, getting in was fine and ordering drinks were fine. We were all slightly wasted already as we had been to several places around town before we ended up there, however we all still had the ability to compose ourselves properly. About half an hour in me and a mate went back outside for a smoke where we were basically verbally aulted by a guy who too offense to a soviet badge on my hat, we were right outside the club and a few feet away from the clubs doorman who basically just watched as the fella told me how he was going to 'knock my teeth to the back of my face'. About 5 minutes later I gave the aggressive give a choice to either follow me to the back of the club where we could really have it out or he could walk away, which he did... Right back into the club! I asked the doorman of it was possible to report the offending guy but he replied with 'he's a regular here, you're not, f**k off'. I was annoyed by his attitude but I gave in and dropped it, 10 minutes later however another doorman came up to me in the club and claimed I was dancing with a drink in my hand a while ago which is forbidden, I had not been doing this and told the bouncer but he immediately started shouting and telling me he didn't like me from the start at which point he threw my own drink over me and threw me out the back door. He didn't bother to open it he just used me to ram it open. Now I don't care how tough these guys jobs get, we all have tough jobs but you don't expect us to physically abuse our customers. How should I go about reporting this? I want both doormen disciplined.