Scotland has a lower birthrate: 1.47 children per woman compared with 1.66 in England.

BBC: Young Scots eager to leave home

Displacing domestic flights and enabling travellers from Paris and Brussels to reach the north of England by train would mean 66, 000 fewer flights a year from Heathrow, removing much of the justification for a third runway at that crowded airport.

ECONOMIST: High-speed rail

Northern Irishman Graeme McDowell is in second on nine under, with compatriot Rory McIlroy (70) and England's Luke Donald (66) a shot further adrift.

BBC: Tiger Woods extends lead at Chevron World Challenge