Although it makes no mention of it in the advertisement just need to be aware that its not always just a simple drive into the water ie a Dutton Reef 2WD car does not legally require a marine or boat licence or specialized registration to operate on UK open waters. Your standard DVLA road registration, Individual Vehicle Approval (IVA) pass, and UK driving licence are sufficient for general coastal and tidal water use.
However, you must consider regional and waterway-specific exceptions:
Inland Waterways:
If you take the vehicle on managed rivers, canals, or lakes (such as those managed by the Environment Agency or the Canal & River Trust), you will need an inland waterway license and registration.Boat Safety Scheme (BSS):
To register for inland waterways, the vehicle must hold a valid Boat Safety Scheme Certificate
.Local Slipways & Harbours:
Local harbour authorities may require a launch fee, local registration, or third-party marine liability insurance before allowing you to use their public slipways.
So less regulated if just used in coastal waters, could be good fun, I do wonder how well it performs in the water with only 15 hours useage on the clock.........