The third was VAD 648H, Vauxhall Cresta, 3.3. For the first 5 months it couldn't pull the skin off a rice pudding (or itself up steep hills). Dad was very disappointed with it as the Sceptre with its 1725, twin choke carb and overdrive box was much quicker. Then the garage finally found the timing was retarded - went well after that!
He followed it with a Granade 3.0 Estate - RDD 918M and then a series of Volvo 240 Estates, the first being FGT 449T. I lost track after that. I think the only one still on with DVLA is the Sceptre.
My first LR was a '66 SIIa 88" HT - HNX 163D - still going, but not with original body (it now has a SIII body).