Whilst a pre owned caravan may come with its service booked stamped, make sure it also has its service invoices too. In the case of Swift these service invoices will have to have been uploaded to Swift’s database fir that caravan in order to maintain and transfer its warranty. Mine had a fully stamped book but not all services had been uploaded to Swift. It took quite a while to track down the dealerships and obtain redacted copies which Swift accepted. Not sure what Bailey Eldiss and Coachman do.