How do I enter a voucher code on MandMdirect?

[Wenchelda]

Bit of a random question but ice never shopped with MandMdirect before but have seen it mentioned in here a few times. Where do I enter a voucher code though? I seem to have gone through the whole checkout process (as far as I can without actually paying) and there doesn't seem to be anywhere to enter a discount code. What am I missing?! Thanks.

Their twitter says you can't any more and any promos will be applied automatically. This is weird!

Oh. That's very bizarre thank you though - I thought I must've completely missing the obvious place to enter it.