[aktiur]

Your source says he admitted writing the comments, which is much stronger evidence before a court than the original comment could ever be.

[tripzilch]

Do they have plea bargains in the UK?

[pjc50]

No, nor elected prosecutors. There is however a system where if you plead not guilty and are convicted you have to pay towards the court costs: http://www.bbc.co.uk/news/uk-32078676