Posted: 24/02/2015 at 07:40
I don't think it's a larch as they lose their leaves in the winter. I'm not good on varieties of evergreens etc, but someone on here will recognise it I'm sure.
I wouldn't prune it - pruning trees tends to encourage growth - there's an old gardening saying "Growth follows the knife". Also at the moment it's an elegant shape which any pruning would destroy, and it provides a lovely focal point in your garden, accentuating the sweep of the driveway. One day it will no longer be there and you'll really miss its input to the structure of the garden.
At the moment I'd keep a watching brief, checking how much it grows over the next few years - then you can work out and plan when it will be time to fell it - in the meantime you can plan the evolution of the garden and how you will replace such a significant contribution to the garden.
I'm very envious of that lovely wall by the way