I have (not so fond) memories of using the adaptor below with a matchbox and some playing cards propping up the edge connector end to ensure stability.
For the vast majority of CPC users whether edge connector or Centronics were fitted would not be an issue as the most popular peripheral by far would have been a printer.
BUT......if you were using a Rombox, teletext adaptor, RS232 Etc sooner or later it was likely to be a problem - having to frequently connect/remove peripherals caused wear.
Incidentally, the maximum number of peripherals that could be connected (and would function OK) was 2. Three was possible but often proved to be unreliable.
Mmm - unable to post photo, I've raised this to Admin and hopefully it will be sorted.
Problem now fixed - thanks
@Gryzor