You will sort of be charged in a backwards kind of way, that being you request your PAC, they issues it (they're not bound by ofcom to give it you over the phone though, they can insist on posting it) you issue it to your new provider and they give you a date for transfer.
From the date you submit it to your new provider your 30 days notice has begun, say for example it takes 7 days that means you will be billed for the 23 days remainder of the the notice period despite the fact you have no service to use.
This is because all mobile contracts stipulate a 30 day notice and ofcom (or oftel as they were) agreed that porting wasn't to become a way of dodging your contract terms.
This is the same if you port to payg.. the only way round it is to MIGRATE to payg and then PORT off the network because there is no notice period on payg. (MIGRATE=change service within the same network, PORT=change network)
I'd also have to take issue with the fact one dies and the other springs into life.. every time I've done it there's been a few hours inbetween and it only goes through with the phone switched off (because once it's on and the sim thinks its unconnected it doesn't try and get on the network again until it's switched off/on)
You people are so lucky.. I was working in a mobile shop when porting started and it was all done by fax.. it was a living nightmare
