practicable

Berry said despite the minimal risk, the government is "required to eliminate risk as much as reasonably practicable".

Buckingham Palace has said the move from Royal Lodge in Windsor to Sandringham will take place "as soon as possible and practicable".

But royal sources have said it will not be immediate, and instead be "as soon as possible and practicable".

Formal notice was given to surrender the lease at the Royal Lodge on Thursday and it is understood that Andrew's move to Sandringham will take place "as soon as practicable".

Transport Scotland said the rail operator now intended to introduce an alternative voice "as soon as practicable".