Any advice on the need for what on my SE8 that doesn't approx 1500 miles a year. ..?

Two years ago a bought her with full vauxhall history, she was due a major which i had done and the cambelt.

A year ago she had a minor and is coming round to what should be, by the book a major.

Short of oil and filter is a major really necessary?

I do know the service guy at my local vauxhall dealer and he does good prices but it has to be by the book if she goes there.