It's legal to park a caravan on the road as long as it's not causing an obstruction, i.e. it can't block anyone’s driveway or create a hazard. This is defined by section 137 of the Highways Act and Regulation 103 of the Road Vehicles (Construction and Use) Act of 1986: www.legislation.gov.uk/uksi/1986/1078/regulation/1...e

The caravan must also have all the necessary regulation reflectors with the nearside facing the pavement so the rear lights can be seen by oncoming traffic at night. Some councils consider caravans parked on roads a nuisance - so it's worth checking with them beforehand, especially if you live in an area where parking is already an issue and/or if your neighbours are likely to make a complaint. In terms of legality surrounding your own property, there may be a restrictive clause in your house deeds, which prevent you from parking a caravan as well.

Your insurance company may take issue with you parking it on the road too. We'd check with them, as well as the council, or you may find that if it's damaged or broken into - your insurer won't cover it. Ideally, a caravan should be kept in a garage or caravan storage park to protect it from damage and to prevent it from causing issues by being parked on the road.