Amstrad Plc is not the dog that many perceived it to be a couple of years ago, but the City is decidedly jumpy about it, and any whiff of bad news is enough to send the shares into a tailspin. News that Amstrad Consumer Electronics was about to undergo a big scaling-back and that well-regarded David Rogers was quitting in protest after just 16 months was enough to send the shares spiralling down to 191.5 pence, against 293.5p in October.