Jammin' is a musical comedy show on BBC Radio 2 in the United Kingdom. It is presented by Rowland Rivron, who also plays drums. In addition to Rowland, there are two regulars in the band, and two guests - usually one comedian and one musician. The two regulars are usually Dave Catlin-Birch and Steve Brown. When Dave Catlin-Birch is on tour, he is usually replaced by Honka James Roby.