I think the second one down shows a former London Transport Green Line coach, a Leyland TF ...see what you think.
http://www.countrybus.org.uk/TF/TF.html
The fourth one is evidently a Walk-thru body, and reminds me of Chevrolet/GMC styles but I shall have to look up my book.
I forgot to say thank you for the book suggestions! Sorry! I was born in 1955 and my parents knew several ex-Polish servicemen who stayed on in the UK after the war and married English girls and I went to school or knew sons and daughters of former sericemen. I also used to go to RAF Northolt a lot as an aircraft enthusiast, and I was proud to see that the Polish war memorial is still there just on the A40 road west of London.