Complex sentence: It retains the brand name of the Odeon cinema circuit first used in Britain in 1930, however it is today owned by and operated by Odeon UCI Cinemas Group and hardly resembles the past Odeon chain.
Split into simpler sentences: It retains the brand name of the Odeon cinema circuit first used in Britain in 1930. However it is today owned by and operated by Odeon UCI Cinemas Group and hardly resembles the past Odeon chain.