OK - Stop Stop Stop........
Sincere apologies guys, I hadn't visited prune for some time and, because I was bored this morning, thought I'd re-evaluate the bite reflex. It seems to be depressingly active unfortunately.
P.S. Thought I'd left a bit of a hint for seasoned posters by mis-spelling the ac name (the usual preserve of those with no experience of the platform or, indeed, ISTAR).
Sorry once again - I'm back off to Mumsnet.............