The last time I bought a VW service not as part of a pack, it was £159 for the standard oil change and inspections, and that was 5 years ago. Maybe Evo1986 can advise what his dealership charge right now. Don't forget also that service 3 of the pack includes a brake fluid change (some places seem to contest this, but it's in the conditions of the service pack) and I believe that the air and pollen filers are changed in years 2 or 3, so straight away you're probably well over £230 to buy year 3's sevice on your own.
Under EU law, VW can't penalise you with regards to your warranty if you choose not to go to the main dealers for your servicing. You can choose anywhere you like as long as they use genuine VW parts and VW approved oil (and other fluids).