When we leave the UK, I will lose my UK phone provider ( its tied into our home phone and broadband) and phone number.
We will be spending a week or so in Singapore on the way, but all our travel docs ( e-tickets, vaccine info, accomodation bookings) etc will need to be accessed through my phone.

A UK sim with roaming charges is quite expensive, and Ive seen mention on here ( somewhere) about buying a NZ Vodaphone sim before we go and using that. Has anyone done this, and how did you find it? Im a bit concerned about how long it will take to set up and where I can get hold of one while we are still in the UK.

Any info ( especially from people who have done this recently), would be appreciated.

Thanks in advance