New SIM starting before exiting old deal

CuppaTea

I've had 3 Sims/numbers with EE for almost 2 years, which is coming to an end.
My son is going to take on his own payment moving forward as he has turned 18 and I will continue to pay for myself and daughter.  
I have seen a good deal with Lebara that ends on the 16th (unsure if midnight 16th or 17th) on this site.  I can't give notice on my current deal until 17th, which is the earliest. We will all take on this deal, me paying for 2, my son for his.
My question is if we apply for the Sim on the 15th with Lebara, can we wait until the 18th to request a PAC code to transfer our numbers, or would we be expected to do it immediately?  Does it make a difference if we wait a few days?  Thanks.

Neil_Jones

You can request a PAC whennever you like, it doesn't commit you to anything until you use it.  Valid for 30 days.

400ixl

You do realise Lebara use the Vodafone network and not EE so you will potentially get a completely different coverage. Have you checked it will work for?

CuppaTea

Thank you both.  
Yes I do realise, I used to be a vodafone user and have used Lebara before, so all should be fine.