"I also encourage folks to have a non-electric telephone. "
That is a very good tip, your cordless 'landline' won't work if the mains fails but your bog standard phone will as it receives its power from the telephone line.
http://www.argos.co.uk/static/Product/partNumber/5526527.htm
Even if you only have it in the cupboard for use in a power failure its a fiver well spent.
A phone that plugs into your BT socket as in the Argos link, not batteries ect.
The US landline phones will still conect you to 911 even if your service has been disconnected and you have no dial tone. Am I correct in assuming that the UK landlines operate similarly?
I think you will find UK is the same as here in Australia, they can disconnect you, for not paying the bill BUT the 000 emergency number must stay available.
Not sure about the no dial tone bit though.