The picture shows a style of dressing that was prevalent across most of western Europe for centuries between about 600 and 1100 AD. Nothing particularly English or British about it.
What is most popular or identifiable is going to vary across time and place, even nowadays - think Salford shell suit / Putney hacking jacket.
Lil ol lady you reveal your ignorance ..."nothing particularly English OR ' BRITISH' about it"-Well that would be difficult since it is based on Anglo Saxon dress of the 7th century and over 1000 years before 1707 when the fake 'British' national was invented by way of the 'Act of Union'.
National Costume of England - National Dress
An English National Costume group are trying successfully to make England's national dress be the clothes worn by the Anglo Saxons during the 7th century. .!