There isnt a way to be reimbursed, as the previous answerer(!) said - he should have alooked around.
12m PL is avery high amount of cover though - normally builders wouldnt need more than 5m - though if he is tendering for public works ie schools and hospitals the higher amount may be needed. The other reason for a cheaper quote is that rates change year on year, and different professions will get different rates. The policy you have been quoted sound slike a package from a big insurer liek Axa or NU, who offer good packages at a low cost. Make sure youre getting the right level of cover though, and the broker you approached has the correct details. �12M for �150 is very cheap!