For example, check out price of IDS (Ford dealer tool) -

http://www.ford-ids.com/uk/start_gbr.html

Can't beat vag-com or VCDS as it's now called for VAG group.

http://www.ross-tech.com/

Engine check pro from Gendan is pretty good (only does engine though)

http://www.gendan.co.uk/product_ENG327P.html