Pounding out music from a sound system, watching TV and brazenly filming TikToks inside their cell - this is the luxury life of a prisoner behind bars in Britain.

The footage, understood to have been shared by an inmate at drugs-blighted HMP Maidstone, in Kent, is the latest incident to expose the epidemic of phones being smuggled into prisons across the country.

The Prison Service has launched an urgent investigation, warning the inmate at the Category C prison that they could have their sentence increased.

In a series of videos, the inmate repeatedly brags about his cushy life behind bars, showing off a range of luxury items inside a cell.

In one video, he films a TV screen with loud speakers playing and says: 'Look at the speakers on the shelf, man.'