I have a Petzl Zoom that you can have. Rubber battery box, but the elastic is a little stretched and might need replacing. Apart from that it's in good nick - never been underground, just used for mountaineering/climbing.
I don't want anything for it but you could make a token donation to a cave or mountain rescue team of your choice.
I'm in Kendal but can transport it to the Dales and hopefully arrange for 'caver post' to get it to wherever you are.