Did a group rolling road several years ago with CKC , "near" Exeter. All was fine, it just proved that Florin was running as she should. Told the tester not to exceed 5K rpm as we needed car for the 135 mile trip home. Think the cost was around £50 -- so worth the cash to us but maybe a complete set-up would need a lot more time & effort by the tester.
Was the only car on the rollers that had a picnic basket on the back.