[Solved] Family court injustice

Hi. Basically, to try and cut a long story short, I feel very agrieved and upset but cant think of any more I can do. My partner left me in Feb 2011, taking my two children. Things were ammicable, until I got a new partner. She stopped me seeing my children, but, we applied for custody. As my ex was aware of this, I was suddenly called by the police to answer a report of sexual assault on a 15 year old girl, my ex wives best friends daughter. SS came to my house and made my partner sign an agreement that I would have no contact with her kids, same for my own kids too. The police dropped the case as there was no evidence or facts. 18 months later in family court, a judge decided to have a finding of fact hearing. She has decided that the accuser, and my ex wife who also told a lot of lies, were telling the truth and I can never have unsupervised contact with my children again! I have NEVER been in trouble before and have always done everything possible for my children. I had a solicitor in court and he along with the childrens solicitor and the childrens guardian were very surprised at how the judge came down so hard on me, as in her opinion I was lying and they wernt. There is a possibility now of a psychological risk assesment. SS will also be told to go back to my partner of the time it happened who with the threats from SS decided to end our relationship, although we still have good contact, and make her sign an agreement to not let me have contact with her kids again. This is so wrong, and its hurting my children, because someone believe 'on the balance of probability' I could be a risk! What can I do, if anything?