LEGAL PROFESSION ACT 1987 — Barrister's invoices (bills) — Liability of solicitor — Legal Profession Act not applicable as the proceedings not for the recovery of costs, but brought to enforce a subsequent deferral arrangement — Whether the bills complied with the Act: signature and other particulars required by Clause 22A of the Legal Profession Regulation 1994 — Particulars not required if solicitor already aware of relevant matters