United Kingdom
In the United Kingdom, seat belts must be worn at all times if they are fitted to a vehicle. Passengers may be exempt from wearing a seat belt for different reasons. Since September 18, 2006, children travelling in the UK must also use an appropriate child seat in addition to the standard seat belt, unless they are 12 years or over and/or have reached at least 135 cm in height.[6]
In the UK, a requirement for anchorage points was introduced in 1965 , followed by the requirement in 1968 to fit three-point belts in the front outboard positions on all new cars and all existing cars back to 1965, Successive UK Governments proposed, but failed to deliver, seat belt legislation throughout the 1970s. In one such attempt in 1979 similar claims for potential lives and injuries saved were advanced. William Rodgers, then Secretary of State for Transport in the Callaghan Labour Government (19761979), stated that: "On the best available evidence of accidents in this country - evidence which has not been seriously contested - compulsion could save up to 1000 lives and 10,000 injuries a year.
So probably not but retro fitted a year or so later, unless Land Rover were switched on enough at the time