The problem (or dilemma) BS is that loading is applied regardless of whether you have NCB protection or not. I'm sure the insurance firms will suggest that the % will be the same regardless. However, I have seen renewal quotes that seem to prove the contrary i.e. the loading % seems to be much higher where the claimant has NCB protection. Of course, no two sets of circumstances are precisely the same so there is no way of drawing any concrete conclusions. When the surcharge for protection was relatively small (in fact, free in some cases) its wasn't really an issue but it seems to be much more significant these days. At my last renewal NCB protection accounted for almost €700 of the €1920 premium, over 33%. I'm with Axa (BJ Pierce) this year and I honestly don't know if that firm offers free step-back NCD "protection". I know Liberty do, it's certainly something one ought to consider on renewal.