Many thanks all, yr comments noted.
I've looked around at the 'lighter' models, but when you've finished with all the 'additions' such as inline heaters etc., they're are all much of a muchness and undoubtedly I'm going to find any of them heavy to lift.
I've also heard there's a knack to lifting them, a bit like tilting a pram up a kerb with a flippin heavy baby in it. I'm looking for a van with a low load on it like a Caddy with the theory of less height, less strain.
I'm going to put a post out to meet up with any cc's in the Lancashire/Manchester area as cc'ing is one thing in theory (passed my ncca last week oh yeah oh yeah), but another in practice.
I'll give the guys at Extracta a call, this sounds the best route, thanks for the advice Glynn, your a gem.
Right, my fella's at the Man U match, I've got the kids in bed and a bottle of wine chilled in the fridge. I'm off. Enjoy your evening guys.
Best regards
Cheryl