Sorry ,you have a shock coming, no claims protection only protects the NCB (for example @ 60%) but now you have claimed they will put up the base premium . So next year you will still get the 60% NCB but it will off a higher base premium . If your base premium was £300 this year and you got 60% NCB so paid £120, next year the base will be £600 and you get 60% off that so pay £240. These higher premiums will continue for 5 years!
Claims protection is not worth the paper it is written on, they just use another method of getting their cash back.