I watched about half an hour of this crap, and could stand it no more, especially Jon Pertwee's awful American accent - why cast him (!?) as the other two USAF "buddies" were actually American. One I'd never heard of (Peter M. Thompson - whose career seems to have fizzled out just 10 years later) and of all people Harold Lloyd Jr. who apparently died at the very young age of only 34, of a massive stroke in 1971, the same year as his more famous father, who also died of a stroke - weird or what.
Anyway, Yank airman in The States is told he has inherited an Earldom in Britianland, BUT he won't go without his buddies (yeah, like he's quite prepared to give up a £1,000,000 inheritance - c.£27 mill now!), and so the English solicitor (played by Richard Beckwith) agrees, and all four set off to the UK. On the first day, he falls in love with an English Rose and so a love turmoil in put in motion as he can't let the goil he left in America down.
And that's as far as I got......................