Try SJS unless someone local has one spare
http://www.sjscycles.co.uk/pumps-spares-dept963_pg1/#filterkey=brand&brand=TOPEAK&page=3
Yeah, they're so cheap that I'd rather not pay postage and just get one second hand.
@Sumo started
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Try SJS unless someone local has one spare
http://www.sjscycles.co.uk/pumps-spares-dept963_pg1/#filterkey=brand&brand=TOPEAK&page=3