Other things to know
You should receive your SMP in the usual way and at the same time as your normal wages, your employer will make all the deductions for Tax and National Insurance in the same way.
If you leave your job or are made redundant after the start of the qualifying week then, assuming you qualify in the first place, your employer is still required to pay you Statutory Maternity Pay. Payments can only start, in line with normal rules, at the 11th week before the week of your due date.
You can still claim SMP even if you do not intend to return to work after you have had your baby and you won't have to repay anything.
Some employers contract terms and conditions are more generous than statutory minimums so it's worth checking with them first before planning your time off with your baby.