Commenting on Facebook alongside a series of pictures he took inside the “on suite” cell, Christian Willoughby said he’d “given the place 4 stars”.

He complimented the staff, including his “butler” who brought tea and newspapers, and said the room’s “minimalistic idea was a nice touch”.

He added: “Ideal place for winding down after a hard day. I’d definitely come back.”

Humberside Police are treating the incident as a security breach and trying to establish how Mr Willoughby snuck a nearly 10-inch tablet into his cell.

Chief Inspector James Glansfield told the Daily Mail: “The force are aware of pictures apparently of the Grimsby Custody Suite on social media.

“These appear to have be taken by a prisoner while in custody on Wednesday 9 March.

“We take any such breach of security and detainee safety extremely seriously and will be carrying out a review of our detainee management to identify any lessons learned and prevent further reoccurrences in the future.

“The forces Professional Standards Branch are investigating the circumstances of the incident.”