Posted: 07/07/2014 at 16:37
You can buy a pruning saw and handle form the Wolf range at good garden centres and DIY stores. Good quality and not expensive. Then I suggest you lift the corwn by removing loawer branches all round the trees. Once you've cleared those away and can see what is left you can then thin th ecrown by removing some of the branches to allow air, light and rain to circulate and permeate.
Make a first small cut under the branch and then cut it cleanly from the top. This will help prevent the bark and wood tearing and splitting and maintain a nealthy tree. Do not use wound paint. The tree will heal itself. Make sure you remove all dead and crossing branches first.
Here is what the RHS advises -
Crown lifting: Lifting the crown by removing lower branches will allow access for mowing, mulching and enjoying the shade cast by the tree.
Crown thinning: Thinning crowns to let in more light by removing some, usually up to 30 percent, of the branches and concentrating on dead or congested shoots is another strategy.It is very easy to spoil the appearance of the tree so this is best attempted in stages evaluating the effect before removing more.
If branches larger than the diameter of your wrist need to be removed or if there is a lot of work up ladders needed, it would be best to call in a professional arborist.