“what has to happen for an entitlement tobe paid to arise?”
“the invoicing arrangements provided for by the10th July 2007 letter are to invoice monthly for work completed to date. The issuing of the invoice is not the fact which entitles the Claimant to be paid (although the non-issue of the invoice might provide the Defendant with a defence to the claim) but the fact that work has been done both entitles the Claimant to be paid and the Claimant toissue an invoice”