Janet Baraclough wrote:
What makes a difference, is the amount of clear space round about
each tree. For instance, if your 9m birch stands alone in a clearing 20
m across, then some not very skilled uninsured odd-jobber can fell it
with one cut and chop it up very quickly. If it's standing within a
couple of metres of your greenhouse, the neighbour's conservatory, a
public street, a power line, and your precious collection of rare shrubs
then it will have to be taken down very carefully in sections by someone
skilled and properly insured.

A take-it-down-in-sections job I'm afraid.

A significant part of the cost, will be disposal. If you are able to
burn the debris on site, or can use or give away the logs for firewood,
you only need pay someone for the time and skill to fell it.

I *might* be able to give away the logs, but can't guarantee it.

John.