yes please, I would like an answer as soon as you are able to pin the law down, the builders do not work saturday or sunday so a bit of respite at the moment, I take it this is still covered by the original fee?
Electricity providers do have the right to approach the Secretary of State for permission to exercise a statutory wayleave over private land to lay distribution cables where the owner of land will not consent. However, this power is rarely used and the normal route is for companies to enter into an appropriate deed of grant of an easement to lay the relevant cables. Also, it is time consuming and costly for electricity companies to go down the Secretary of State route. Also, the use of the power can only be granted where it is "necessary" or "expedient" to lay the cables over the land, so if there were alternatives, they would need to be explored first.
As for trees with preservation orders, then yes, you would need to speak to the local authority as you cannot cut them down or remove them whilst there is an order in force in relation to them.
Thank you that is useful information, and I will continue to liaise with the electricity board regarding a solution to the problem. It would seem that they are keen to go underground with supply but have admitted that they would prefer my house' cables are run under my land rather than the developers. Of course as I did not want this doing at all I will be expecting the developer to pay for the cost of this, which I think is only right.