Help with J & L co ltd glassware England

I picked up this set of 6 glasses because I'm a Jane Austen fan and I couldn't resist the little Georgian era painted scenes. I found a set online which were definitely made by the same producer. They are exactly the same except they have portraits of The Beatles on them. They were made in 1964. I assume these were made in the 60s too. The producer was J & L co ltd in England. Does anyone know anything about this company? Many thanks!

Listing for The Beatles glasses: https://entertainment.ha.com/itm/mu...tles-drinking-glasses-uk-1964-/a/7149-89196.s

My glasses:

 

Transfer, rather than painted. Transfers were sold to many different companies, too. Do yours actually say J L and Co?

 

Here's a boxed set of the Beatles glasses: https://www.worthpoint.com/worthopedia/joseph-lang-nems-beatles-drinking-1753379288 I'm sorry, I see there are a ton of these, and it doesn't tell you anything about the company.

 

This is very helpful, thank you! Joseph Lang must be what the J&L stands for

 

Mine aren't marked at all but I don't believe their other glasses are marked either

 

They may not have been made by Joseph Lang. Souvenir and other promo glasses were bought as blanks, transfers added.

 

I think you might be right because I can't find any of these under that name. Can't find any online at all in fact