DD1 we told mum as she was with us for the delivery. DS we told mum for the same reason and my sister as she looked after DD1. DD2 we only told mum, the other two kids were at school. My sister did figure it out when I didn't answer the phone and neither did my mum or my DH. She then called the hospital, who confirmed I was there. She was waiting in the hospital car park when DD1 was born (lucky for her I have short labours!) and when I rang her she was in the delivery suite about 2 minutes later! She was also outside the delivery suite when DS was born, but that was ok as I wanted DD1 to meet her new brother ASAP. With DD2 we asked her not to come to the hospital until we rang her as it was really important for us for DD1 and DS to spend as much time with DD2 as they wanted before we accepted other visitors. She was most put out!

My PIL cracked the big sads as it was 'inconvenient' for them not to know when the baby would arrive and 'inconsiderate' of us not to tell them. I would have been happy for them not to visit at all. Ever.

I would tell people that you have booked a day of pampering on induction day and so you won't be answering your phone... massage, facial, pedi etc. People will probably assume you are being induced the following day!