The UK Border Agency said pregnant women were held as part of a fast-track process or where removal was imminent.

BBC: Yarl's Wood: 'Too many pregnant women held'

Despite recent cold weather that has slowed down removal of the final stretch of spoil from the Imberhorne cutting, and the laying of track and cabling, Mr Watts is confident the stretch will be completed in time.

BBC: Bluebell Railway memorial for founder Bernard Holden