Well it's fixed
I did the restore back to 19Aug and struggled to find the snippimg tool, seach stopped working. Found it and it was working, did the snips I needed.
Then tried to undo the restore but the older sw couldn't cope with that, so just settled for reloading the Win10 updates.
No further updates to download and the snipping tool is still ok.
I can only think that removal and restore of updates got rid of whatever corruption occured.
Very happy bunny now, thanks for all the assistance, very much appreciated.
Brightens up the miserable weather we've got in the UK at present.
Regards
Nige