What’s the music on the Jaffa Cake advert?

What’s the name of the music from the new Jaffa Cake’s TV ad?

The latest advert for McVitie’s Jaffa Cakes (below) features the theme tune from the quiz show Blockbusters.

Hosted by the late great Bob Holness, the programme originally began airing in the UK on ITV, during the 1980’s. Most recently and now presented by Simon Mayo, Blockbusters ran for a new series in 2012 on Challenge.

The original piece of music was created by the English television composer, Ed Welch.