The December 1982 issue of Your Computer featured an attached flexidisc containing games for the ZX-81, Spectrum and Vic. Unfortunately I can't find this forerunner of the cover CD, but from the article in the magazine, using it was an involved process. At the time, the standard input method for restoring your saved programs was via cassette tape, so the procedure for the 33rpm flexidisc was to record it on tape and then load from the tape on to your computer.
Elsewhere the issue included a wide variety of games to keep your fingers busy typing over the festive period, some of which were reproduced in extremely small type. Or perhaps my eyesight was better then. In the letters page there were further complaints from those still waiting for Sinclair to deliver their Spectrum, in some cases after waiting for up to 4 months, all against a backdrop of new machines from the Japanese manufacturers.