I've used Sussex Tree Works recently to trim two apple trees and sort out an overgrown hedge.
I'd at least get a quote from them. Two of them for about 6-7 hours £330 incl VAT
26 Hogarth Road
Hove
BN3 5RH
sussextreeworks@virginmedia.com
www.sussextreeworks.com
VAT Registration No.: 225 5219 25