Halfords pro maybe? Get a 1/2" drive with up to ~120Nm?
Edit:
Here: http://www.halfords.com/webapp/wcs/..._productId_180255_langId_-1_categoryId_165469
Will do most of what you want, no hub nuts though. For that you'd want:
http://www.halfords.com/webapp/wcs/..._productId_178621_langId_-1_categoryId_165469
I'd reckon it'd be best to go for the second one you've listed and getting a 3/8 Drive one for the less tight stuff - A 1/2 drive torque wrench doing something like spark plugs is a bit unwieldy .