ICL OPD, you mustg be joking. A hastily rebadged Sinclair QL, with some ancient BT comms slapped on it, that was a pile of crap. It was even more in the face of the snowballing PC reveolution than the largely successful BBC Micro.
The realy success of recent UK IT was ARM, which evolved out of Acorn Computers and the BBC Micro project. Now powering more devices than Intel by a vast margin.