Strictly speaking it’s about controlling ALL courier companies. But Hermes and their terrible service when things go wrong - and they will at some point - takes the biscuit.
petition.parliament.uk/signatures/123173660/signed
There’s also a Facebook group - “ Hermes failing to deliver parcels since ….” for all those people who have spent hours days and weeks trying to contact Hermes when their parcels get stolen at the depot. It’s full of horror stories of people being royally stuffed by this company with no comeback.