PollinationX.com is the name of the group singing the song aired during the last show.
It is a London (UK) based unsigned band consisting of members Peter
and Sarah.

"So People" was written by Sarah in an attempt to raise
awareness about the urgent action required to prevent the very real threat of
the devastating effects of climate change…
Pollination X believes we
are all responsible for the cause of climate change, and therefore we can
make choices as consumers to help alleviate the effects of climate
If we all make small steps to cut down on emissions (i.e. taking
the bus to work instead of using the car/not leaving electrical appliances on
standby etc) that will lead to a big change.

Thank you to Alex who told us about them.
You can listen on their site.