Twice As Much

Twice as Much was composed of Dave Skinner (born David Ferguson Skinner, 4 July 1946) and Andrew Rose (born Andrew Colin Campbell Rose, 12 March 1946, Edgware, Middlesex) and were harmony singers who also wrote much of their own material. They were signed to Immediate Records, which was run by The Rolling Stones manager, Andrew Loog Oldham.

source: Wikipedia