UK Border Controls sign at Heathrow Terminal Five
Media playback is unsupported on your device

Conservative activists urge PM to extend border controls

Ninety senior Conservative activists have urged David Cameron not to lift border controls on Bulgarian and Romanian migrants on 1 January.

In a letter to the PM, they argue he could use a clause in EU law to prevent a "hugely disruptive and destabilising wave of mass immigration".

It allows countries to continue with border controls if they have "serious labour market disturbances", they add.

Iain Watson explains.

Go to next video: Romanians on migration opportunity