Evening all.
Congrats Grey!! Whoop whoop, so exciting.
Becca - ask the sender to resend it to you at her cost and to reclaim her double postage from Royal Mail. It was either her mistake for forgetting the postcode (which eBay do provide!) or the royal mail's fault. Either way, not your fault. And I would suggest that if she refuses you threaten to contact eBay and complain about her. And give negative feedback. That sort if behaviour from a seller is just not on.
Mat leave: I will be working as close to due date as I can. I have a (mainly) desk job and I'm hoping to work from home a bit towards the end. However beware that some employers are funny about you working in the last 4 weeks of pregnancy - technically my HR policy says I need a doc note to work past this point but my boss doesn't enforce this. I plan on taking 9 months mat leave. I took the full year the first time and I felt it was a bit too long - I was ready to go back to work at 9 mo. I do think less than 6mo (especially if working FT or 4 days in a demanding job) would be very tiring. But I know folks who've done it and survived to tell the tale 
Prambo what is your fridge cake recipe? I'm doing the online shop tonight and it sounds lush!