Sinclair C5 "a delightful toy" "The Daily Telegraph" described it as "a cleverly-designed 'fun' machine that can hardly be regarded as serious, everyday all-weather transport", while "The Engineer" viewed it as "a smashing big boy's toy, tough enough to take teenage thrashing and possibly a serious vehicle for fit adults to nip out in for the Sunday papers". On the plus side, the C5's handling characteristics were praised by reviewers. "The Guardian" called it "very easy to master once you have become familiar with the under-thigh handlebar steering and the semi-recumbent driving position with feet on bicycle-type pedals." The "Daily Mirror" described
Sinclair Radionics was failing, Clive Sinclair took steps to ensure that he would be able to continue to pursue his commercial goals: in February 1975, he changed the name of Ablesdeal Ltd. (an off-the-shelf company he bought in September 1973, for just such an eventuality) to Westminster Mail Order Ltd.; this was changed to Sinclair Instrument Ltd. in August 1975. Finding it inconvenient to share control after the NEB became involved in Radionics, Sinclair encouraged Chris Curry, who had been working for Radionics since 1966, to leave and get Sinclair Instrument up and running. Sinclair Instrument developed the "Wrist Calculator" to generate