Originally Posted by Blackhood
In my opinion your outfit is already too flamboyant to be reliably considered classically English.
Have you ever seen what Nick Foulkes wears? There are (at least) two different strands of British dress - one is very conservative, particularly in the city, and follows rules set basically in the late 19th century. Always white shirts, black shoes, grey or navy suit, sedate tie.
There's another thread - I'd suggest started mostly in the 50s/60s kind of growing out of Carnaby Street but then becoming a part of Savile Row too - that often incorporates brighter colors. A purple gingham or striped shirt with a dark suit would be faithful to this aesthetic. You may consider this not part of "classically English" but if you walk around the Row you'll see plenty of people working in classic SR houses that are dressed like this.
Both of these looks I'd call "sharp" - for instance, almost always including black shoes - and distinguish from the Italian palette, which uses more browns and creams.
The OP's outfit is kind of an American bastardization of this Italian style, of which GQ and J. Crew are strong proponents.