I would recommend Steve @ Freedom Campers (aka crazycaver). He's an amazing VW mechanic and totally loves what he does. He's based in Settle which isn't exactly West Yorkshire but it's still in Yorkshire and it's a fab trip out into the country. Ok, so he's my other half and I'm a bit biased but he really is great, I promise...
thats a bit of bad luck with your mechanic moving, i tend to do all my own as well mork even brakes and pipes as well, touch wood aint joined the band of home on a truck thread yet, we did a brecon-rhondda run yesterday, then home via cardiff-newport-monmouth-hereford-leominster-ludlow-churchstretton-shrewsbury non stop. no hic cups happy days