Thomas Fairweather wrote:
The hedge is 14ft high and 30ft long and I want it 7ft high

They can do it from stepladders, they only need to get to around 6 ft
high....the biggest job is getting rid of all the offcuts, although there is
little weight in them, they are bulky....personally I'd get a handyman in if
you are not up for it yourself, I don't think a tree surgeon or gardener is
required considering it's already been topped.