Although the Union Flag represents the United Kingdom of Great Britain and Northern Ireland, it does not seem to include any Welsh symbols or colours
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What is the difference between the Union Jack and the England flag
Union Jack with Wales, but it's not a low effort overlay. : r
Is it possible to disrespect the flag?
Union Jack 'must always' be flown in 'superior position' to Welsh flag, says UK Government, union jack
The difference between the Union Flag and the Union Jack — and why
The best of /r/vexillology — Flag of the United Kingdom of England
Will we ever have our own flag for everyone to honour
Flag of the United Kingdom History, Meaning, Colors & Design
Union Jack 'must always' be flown in 'superior position' to Welsh flag, says UK Government, union jack
Flag of the United Kingdom History, Meaning, Colors & Design