I can't seem to get my head around this so please help me understand. Part of our pay is withheld during the year to then pay us evenly, and over the summer break. Now if you are on maternity leave you could be paid less over the summer than a colleague, when you have both worked the same to that point. Likewise if you give birth in July you are paid less for the same amount of maternity leave than a colleague who gives birth in September. Being due at the start of the May half term would mean that you don't get paid for that holiday and that you are on SMP by the end of the Summer holiday?