Hi guys,
Thought I would share this (picked it up from a Polish Volvo forum).
The strut that holds the boot floor up in my 2010 XC70 had lost it's strength. It turns out, the rear boot strut for recent Peugeot 206's is a similar size and works great in it's place.
I got mine from Ebay for £12 - A Meyle branded one (search MEYLE 11-40 910 0016 GAS SPRING REAR WINDSCREEN).
It's slightly longer I think and definitely stronger than the original. But it takes 20 secs to change and just means you need to compress it slightly before fitting (fit one end, compress and clip on other end).
Works an absolute treat. Effortless up and down