Hi and thanks in advance for your replies.

I recently collapsed the large portion of the rear seat, using the handle in the boot. When I tried to lock it back up, it would not latch. No sign of any obstruction and have manually checked the latch isn't seized. Tried giving it a good shove but still nothing. The tell-tell remains up (indicating unlocked).
I think its possible that the cable has come off the mechanism inside the boot. I can't confirm as I'm away from home for the next few weeks.
Just wondering if anyone has experience of accessing this mechanism to reattach the cable.
Any tips on what needs to be removed to get behind the handle panel or if anyone has pictures or the appropriate pages of maintenance manual.
Much appreciated.