Terrydoh - Aha! Many thanks. I think that might just do the trick. Every day's a school day, as they say :) I'll get off to the plumbers merchants tomorrow for a new tool....woo hoo!
Thanks to the others for their suggestions and comments.
Hopefully this has worked. In-line valve is on LHS next to tank and is not as far forward as it looks in the photo. It is at the centre point of the tank's circumference if you know what I mean.
Hi guys - my first ever post!
Average DIY-er. Need to replace a 22mm leaking isolation valve in cylinder cupboard (Megaflow). Very difficult to access - see photo. Don't think I can do it with my basin wrenches (got both types) as not enough leverage available. Any suggestions please?
Tried...