The maximum deductibles required by this Schedule Part 9 (Insurances) shall be increased in multiples of £5,000 as follows. If on a renewal date maximum deductibles figures stated in this Schedule Part 9 (Insurances) (index linked) shall exceed the existing maximum by £3,000, then the maximum deductibles required by this Schedule Part 9 (Insurances) shall be increased by £5,000. To avoid doubt if on a renewal date the maximum deductibles figures stated in this Schedule Part 9 (Insurances) (index linked) shall not exceed the existing limits of indemnity by £3,000,000 then the maximum deductibles required by this Schedule Part 9 (Insurances) shall remain unchanged.