Thanks guys. After weeks and weeks of trying to get this job done engineer turned up last saturday, clueless about what the job involved. Once he saw the length and conditions (2 water filled drawpits in a muddy field) he said "best I leave you a roll of cable, run it yourself and rebook the job" unfortunately he only had 78m of cable. He reckons he's attached a note on the job that says what's needed but I know that the next engineer will turn up and end up saying the same.