A couple "saved £23k" building a garden office shed from scratch using recycled materials - including insulation saved from a skip.

Graham Anderson, 35, and his wife, Rachel, 34, were working from their spare bedroom but decided they needed more space with their four children running around.

The couple - who are both architects - set about designing and transforming an unused patch of land at the bottom of their garden into a vibrant garden room - to use as a workspace.

Graham, alongside his father-in-law, also called Graham, they spent a year constructing and building their new hub.

To be as economical as possible, they made an effort to source their materials from free online ads.