legal advice please

[me2]

A neighbour of mine is about to build a new property in their back garden, problem is they seem to beleive that they can bring the services [gas ,water ,electricity] across my property, now this may have been OK normally, but they have been giving me a VERY hard time recently on another matter, not much forsight on their part in this is there,can any legal forumites give me a definitive answer as to my rights on this matter please?
They do not have any easements etc to permit this!

[me2]

Thanks for your reply zumbruk, what I was really interested in is if the utilities can force me to allow them to provide them with services, across my land.

[me2]

Thanks to all for the replies,I think I have got the idea, the agro they have given me may prove very costly to them.