(04 Apr 2022, 11:31 am)Andreos1 wrote At the risk of seeing things I didn't want to see (see MurdnunoCs euphemism comments), I Googled it.I've now googled it - they look nice but the images on the back of the bus looked closer to moths or paper aeroplanes than that - possibly because they were very light in colour.
Apparently a purple emperor is a butterfly.
Quite why a rare butterfly would flit in and out of Peterlee is anyone's guess to be honest.
The slogan now makes a bit more sense but I still fail to see how it's promoting the service, or why it's on the back of a bus.