BBC iPlayer are showing this, Death on the Tyne and Dial M for Manchester at the mo. Stars Johnny Vegas and Sian Gibson.
"A Blackpool coach driver and a female tour guide get caught up in a whodunit mystery when someone starts bumping off their passengers, the elderly fans of a crime novelist who's showing them places that inspired his works, one by one"
I'm in bed poorly so I've watched them all and they're great fun! Especially if you're a fan of sitcoms like Benidorm. Really easy watching, they're from a couple of years ago, I think it was first shown on UK TV Gold? Anyway definitely worth a watch!