; Series 1 and 2 (2003–2006): Justin showcases things in a white screen set, with the Mr Tumble sections in the middle of the episodes. Each episode has a duration of 15 minutes. ; Mr Tumble shorts (2007): From 2007,
CBeebies occasionally showed short programmes consisting of the
Mr Tumble sections from the various episodes, without the sections featuring Justin. ; Series 3 - "Out and About" (2008)”: The first "Out and About" series featured Justin wandering out of the white screen set through the magic doors and into a different location set within the UK. Each episode has a duration of 20 minutes. ; Series 4-6 - "Out and About" (2010–2011)”: Series 4 of the show followed the
Out and About format of Series 3 and introduced a new character, Lord Tumble. The series has Mr Tumble and the other Tumble characters primarily based in "Tumble House", a large detached house located in extensive grounds close to the sea, located in
Porlock,
Somerset. The house and grounds are populated with large coloured spots, balloons and similar circular / spherical items in keeping with the spots on Mr Tumble's costume. The episodes typically feature Mr Tumble sending photographs of items he is interested in finding out about to Justin using his "Spotty Bag". Justin, with the assistance of the children with him, locates these items or activities and in return sends associated items back to Mr Tumble. There is typically a link in the theme between the actions of Mr Tumble and the other Tumble characters, and the activities Justin and the children participate in. ; Series 7-present: “We're All Friends" (2012–present)”: In 2012, a new series, "Something Special – We're All Friends" started, introducing some minor changes to the Out and About format. This format change included a change of location, and introduced the "Tumble Tapp", a
tablet computer. ==Series overview==