holiday pay on maternity leave!

I'm leaving for work on the 28th November to start my maternity leave, on Christmas we all have two days bank holiday, I spoke to my manager and he said that I can't bring my two days holiday from Christmas time forward to leave earlier, and I can't take two days holiday into next years holiday entitlement and he said that I won't be paid for my two days holiday during maternity leave? Is this right? Surely them two days holiday I should be allowed to bring forward?