Minor (10k) service is ONLY a oil n filter change.. 20k is oil, filter + fuel filter (on diesel) and inspection..
40K is above + air filter
60k is the big cambelt... £300 on its own + another 200 for service
but they also have "Annual service" which is basically a 20k every year fo the low mileage drivers
If i were you, id buy the oil yourself (make sure its VAG certified.. Millers is usually cheap) and get a indie to do it, and make sure they use the appropriate OE filter, as long as they stamp your book youll be fine.
Oil can be pricey VAG motors... the dealers charge about 10-12quid per litre of the 505.1 stuff and up to 18quid for the 506.1 longlife stuff! - as above, i bought 5 litres of the millers XFE-PD for my Fabia vRS which is 505 approved for 20quid