Unlike UK car tax (Vehicle Excise Duty) or MoT test, where the full 1 year period is given when bought, the CCA, in their wisdom, have seen fit and appropriate to penalise enthusiastic early applicants by making the renewal date 1 year from application rather than the more honest and sensible principle of giving a whole year from when the registration is required, ie 30th November. Not big sums, but an important point of principle; don't bite the hand that feeds you!
What a thoroughly stupid way to alienate the honest, decent, law-abiding UAS / UAV operators, in an ill-considered scheme which will only be complied with by the honest, law-abiding operators. It does nothing to catch those who are going to wilfully flout the law and operate illegally and dangerously.