Can I use a local garage for servicing and keep my warranty?

I plan to buy a new Citroen C3 from a Citroen dealer in Lancashire. I live in Isle of Man but there is no Citroen dealer here. Would the servicing by another garage be acceptable for Citroen warranty purposes?...

Do I need to use a Toyota dealer for servicing to keep my warranty?

Is it best to use main dealer for servicing to keep 10 year warranty, or independent garage using main parts?

Can I service my new car at an independent garage without voiding the warranty?

Is it true that to ensure the validity of a vehicle's three-year warranty, you have to have it serviced by the supplying main dealer? I've just bought a 12 month old Jaguar F-Pace with two years warranty...

When would be the best time to buy a new car - before the new registrations come out or after?

When would be the best time to buy a new car? Before the new registrations come out or after?