Well they run out today so now's your chance ;-)
I haven't looked at the BT option but 192 will give you name and
address, phone number if available and point you to the address on
Google maps, take you straight there as it were, also has electoral
records again if available, although they hold out on the most recent
and want yet more money for those.
My main objection is the above, 6 months and you've lost your money,
well if you want to look up a few people and you don't use all the
credits it's just money down the drain.
PB