Not necessarily the same, but I was on a coach trip to York Market yesterday through Caledonian (not recommended, it's shite), and was ran by Procters.
The driving standards of the coach driver was absolutely appalling, constantly up people's arses and swerving around people on the A19, pulled out in front of someone at a roundabout causing them to slam on, and just generally braking late and hard.
There were several points on the way back where it genuinely felt dangerous!