Supermarket Sleuth: What's causing so much food waste around the world and the action consumers can take to make a difference.

This week we look at food waste before updating progress of Asda under its new owners, finding out about something odd that's just been bought by Morrisons and discovering that business is not going too well for Aldi in the UK. We also look at Australia and learn how woolworths is doing as well as considering why Aldi has not yet opened an online business and wonder when it will.