Edward Elgar is one of the best-known British composers. Here’s his Serenade for Strings, performed by the Concertgebouw Chamber Orchestra in Holland in 2016.
It’s interesting that this rendition is paced slightly faster than most recordings of the Serenade for Strings. Its timing is very close indeed to a recording of the piece conducted by its composer in 1933, shortly before his death, which you can also hear on YouTube. To my ear, the faster rendition seems to flow more naturally than some of the slower ones I’ve heard.
Elgar may be the most recognizable classical composer – Pomp and Circumstance (more properly "Land of Hope and Glory") is instantly known by even people who never listen to classical music).