Should I use the main dealer for my service?

My wifes 2010 Aygo is due 20,000 ml service. Shall I use a Toyota dealer - pricey at £200 plus - or a decent independent I know? Will it affect my warranty or resale value using a non official garage?
You'd better go with Toyota, because quite a few problems are starting to emerge at around 3 years old and you don't want any warranty quibbles. See:
Answered by Honest John on

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