Thank you Freddy - sorry to miss you.
The lens is stuck in an extended position with the switch off. When I switch it on the lens initially goes in and then out again a couple of times and then remains extended.
This partially worked but when I press the zoom button the les zooms but the I am told toswitch the camera on and off a few times and it nowappears to have righted itself. Sorry for not getting back to you straight away - I wanted to be sure it was OK. Many thanks, Brenda