Brad Pitt and Angelina Jolie have splashed out on improvements to their Malibu mansion ahead of their return from Africa.

The happy couple are expected to leave Namibia with their three children shortly and move back to the US.

According to TMZ.com, cleaners have been sprucing up the property all week and a new CCTV system has been installed.

The mansion's tennis court is also expected to be transformed into a giant play area for the pair's older children Maddox and Zahara.