Tesco are doing a 4000 Clubcard points bonus if you take out life insurance at the minute. The points are credited after 1 month and it looks (I am open to correction) that after you have paid your first months premium (minimum 5 pounds), you could cancel the policy without penalty!
4000 points equates to 6400 BA Miles or double that if you are a premium clubcard person! Where's the catch?