Sky has chosen Grub Club, Milliways, Ocean Bottle, OceanSaver and UpCircle to each receive £250,000 in advertising value to help create TV campaigns to drive sustainable behaviours.
These airtime prizes, which come from the third annual £2m Sky Zero Footprint Fund, mean these brands will now move into ad production.
To reach a decision, a panel of experts from across advertising, creativity, and sustainability assessed live pitches from the shortlisted brands last week.
There will be another stage of judging in December wherein the best creative will win an additional £750,000 in media value to total £1m in total.
Sky Footprint fund winner: airtime prize means we get taken more seriously