“Properly drawn bills ought in future to state the agreed charges and/or the amounts that the solicitors are intending by the bill to charge, together with their disbursements. They should make clear what parts of those charges are claimed by way of base costs, success fee (if any), and disbursements. The bill ought also to state clearly (i) what sums have been paid, by whom, when and in what way (i.e. by direct payment or by deduction), (ii) what sum the solicitors claims to be outstanding, and (iii) what sum the solicitor is demanding that the client (or third party) is required to pay.”