1) It is linked to the account which is owned by a subscriber. You can take the number with you within the same exchange;
2a) You have to get a "new" connection from a tephone provider. You may be able to take over the account from the old occupants if you want to, they dont take it with them and the providers (not necessarily BT) agree;
2b) A new number and a new line are different (usually). You can either order the line and the ADSL together or do a "Simultaneous Provide" where BT (usually) and the ISP provide the service on the same day. The phone supplier gives you a code that you give to the ISP as you do not necessarily know the number at this stage;
3) You cannot get a "data only" line on a BT OpenReach provided line - don't know about Virgin;
4) Many options for discounts on provision of new connections. BT will provide free if you sign a 12 month contract, Post Office will give a shorter period I believe
5) Find out who the telephone service is with. This is crucial and order in advance.
Best of luck!!
Ex <n>ildram , been to SKY MAX - 15,225 Download
BE Unlimited - 21,000 Download 1,200 Upload,
Moved house, now BE Unlimited 6,500 Down, 1Mb/s up - gutted!
FTTC Cab installation commenced 12th April - expect full 80 / 20 - bye bye BE, hello BT Infinity soon!