If my experience is anything to go by, you will be pestered by electricity companies vying for your business.
Be careful, I signed up for a 2 year fixed deal on what was said to be the cheapest local rate. After 3 months the rate went up!!!!!
I questioned this and was told, the price of the electricity has remained the same, the cost of distributing it to my salon has risen, I should read my small print, Grrrrrrrrr!
I have heard horror stories about the end of the contract period too, if you don't give 3 months notice, they will automatically renew you and you are stitched into another year or 2.
If you join the FSB, they have some good rates for members for telephones etc.
I heard these were cheap too: -
Cheap business phone line rental for small businesses