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UPDATE:
My bail conditions have been lifted, I haven't been charged with anything, but the entire case is off to PPS, In reply to Eddie and Mike's answers, I didn't admit to giving him a bloody nose, I admitted to hitting him once on the cheek to stop him from hitting me for the second time, and the fact that I had already been punched to the ground and was dazed meant that the punch I threw wasn't even that strong. Plus a few witness statements saying that he didn't have any blood on his face or shirt.
I won't be pleading guilty to anything, regardless of the circumstances, the guy was going to attack me and I had to stop him using necessary force, I'm not having a criminal record because of that Finance Specialist.
My solicitor is 100% behind me on the self defense side of things, but as it's off to the public prosecution service, there's not much I can do. Hopefully they''ll just drop it from lack of evidence. It's basically only his statement that puts allegations towards me with nothing to back it up and counter evidence to support my side of things.