31. Subject to the provisions of any rules of court or county court rules, on every taxation of costs in respect of any contentious business done by a recognised body, the taxing officer may—N.I.
(a)allow interest at such rate and from such time as he thinks just on money disbursed by the body for the client, and on money of the client in the possession of, and improperly retained by, the body; and
(b)in determining the remuneration of the body, have regard to the skill, labour and responsibility on the part of any solicitor, being an officer or employee of the body, which the business involved.]