To my knowledge 541's were never sold over here, an old friend in Ontario owns one, been in his family for many years... Not sure when his dad purchased it over in England, but it wasn't purchased new... Then Peter moved to Canada in 1976 and brought the Jensen along with him, drove year-round for two years then retired it for many years doing a very slow restoration... I only met Peter because I worked briefly at a gas station (about 12 years ago), full-serve, he came by in his 1980's Jaguar Sovereign (ie. XJ6) we started chatting cars, off-hand he mentioned about a Jensen he had a home, said it was a 1956 541, as my jaw literally dropped...
He said I was welcome to drop by his place, I sure wasn't going to say no...
I got to know Peter quite well during my three years spent in Ontario, he made quite a bit of progress on the car, just before I moved back to Alberta he told me that my interest was part of what got him going on the restoration again as he hadn't done anything on the Jensen for a long time, I never did get to see it on the road...