A name I would also put forward is Frank Lewis who makes excellent tuneable Bodhrans.
Not sure where your brother is in the UK but Frank will be at The Fylde Folk Festival (Fleetwood Lancashire) and often does the Bodhran teaching classes both at Fylde and with Folkus. which your brother may find interesting.
Frank also runs a folk club:
Kings Arms, Hale, Milnthorpe, Cumbria LA7 7BH: Hale & Hearty Folk Club 8.30pm. Frank Lewis 01524 734440