What is needed...
is a publicly owned telecommunications company that would look after the infrastructure for the whole country.
Then it could lease out the fibre lines to any company that wished to provide internet service.
As a public concern, it could be non-profit making and be totally impartial to who leases the equipment/lines.
We could call it something like Great Britain Telecommunications company or maybe British Telecom for short ;P
Just a thought :D
In addition to this, they could charge householders to have fibre to the home at an install cost of say £200. Then they reduce the burden on BT. This of course could be optional so that only people who wanted FTTH forked out but they would be the only ones able to connect to high bandwidth apps. Therefore removing the problem of overloading copper lines.
Mines the one with the carrier pigeon in the pocket.