Wayleave is registrable as an easement i.e. can be specifically described and defined. Wayleaves last for the life of the transmission line normally in perpetuity. Due to the nature of transmission lines, the consideration is normally a capital compensation value made to the property owner.Call the company that owns the line. Thompson Broadbent stated they take 15% compensation (up from original 10%) so from an offer of £1550 they want 15% . They also recommend a solicitor, funnily enough with Broadbent in their name too) just received a letter from the power company's surveyors, the total claim is £2750.