COSTS — Action by a solicitor to recover costs — Solicitor did work for defendant from February 2009 to 8 July 2010 and rendered a bill — No costs agreement in existence until 9 July 2010 when solicitor commenced doing further work for defendant, after having delivered a costs agreement which could be accepted by conduct — Defendant paid for work covered by fee agreement for work done after 9 July 2010 — Application by defendant for dismissal of claim