It is good to know I can have caller ID service now (I am in Glasgow). But I still have a few question about it.
First, do I need to buy specific Caller ID display unit or just any type? I searched eBay and found some BT units. But the seller's description seems suggest it may not work with crtain network (he ask bidder to call a number to check first).

My second question is actually not about Caller ID. Can NTL prevent anyone from a certain landline number call my home?

Thanks a lot in advance