Hello Grenademan,
No need to worry about a can of worms here;
England is a part of the 'United Kingdom' known as 'Great Britain', (a hangover from the days of the British Empire), The other members of the UK constitute, Scotland, Wales, and Northern Ireland. Southern Ireland is independent.
We enjoy lighthearted banter between ourselves with no malicious intent whatsoever.
Like many others when confronted with an official document which almost certainly offers a list of boxes to tick regarding your nationality, ie; White, Black, mixed race, Asian, Polish, British, other, etc. etc..we take a perverse satisfaction in erasing 'other', and replacing it with 'English'! I hope the others do the the same, lightheartedly of course, because perhaps I'm the only old bloke that does? I'm expecting the PC 'thought police' to knock down my door at any moment!
Any thoughts from any nationalities welcome, I expect to get shouted out by the Scottish Nationists, but I love their country as much as any other, and subscribe to no political party whatsoever.
Best regards to all, and I mean ALL,
navyman.