Thanks chaps.
I had previously owned 2 HPs with no problems until one gave up the ghost. I will try what you suggest.
I did suggest that they might supply me with a replacement print head, and this appears to be possible, though apparently I will need a manual to install it and special software to calibrate the installed head. I think all their blah may be designed to make the offer of a used replacement for £51 seem quite attractive. They then take mine away and replace the print head for some other punter.
Regards
STH