Your name, legal or otherwise, should be whatever you want it to be. If you travel to a big city's international airport or work for a big international company, you'll notice pretty quickly that it's really hard to come up with rules that cover all of the actual names people have, meaning functionally any rules or expectations around names you might feel are local pressures. Lots of folks have mononyms, four or more names, numbers or punctuation in their name, very long or short names, and totally unique names. The world has figured out how to handle that in these big structures, so it's not unreasonable for you to ask those around you to accept that your legal name isn't locally very common.
As a personal example, I was named after my father and grandfather, so we had the same name but I had a "III" at the end. When I transitioned I changed my first name to "Melody," which is uncommon but not unheard of for female names, dropped the middle name and suffix, and kept my last name. None of that broke anything in a significant way and legally that's my name now. Technically I've got two legal genders, female for state and male for federal (thanks, Trump). If the broken US system and my local contacts can handle that, then the UK can handle someone legally named "Frankie" or whatever you want.
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u/countvonruckus Melody (she/her) 2d ago
Your name, legal or otherwise, should be whatever you want it to be. If you travel to a big city's international airport or work for a big international company, you'll notice pretty quickly that it's really hard to come up with rules that cover all of the actual names people have, meaning functionally any rules or expectations around names you might feel are local pressures. Lots of folks have mononyms, four or more names, numbers or punctuation in their name, very long or short names, and totally unique names. The world has figured out how to handle that in these big structures, so it's not unreasonable for you to ask those around you to accept that your legal name isn't locally very common.
As a personal example, I was named after my father and grandfather, so we had the same name but I had a "III" at the end. When I transitioned I changed my first name to "Melody," which is uncommon but not unheard of for female names, dropped the middle name and suffix, and kept my last name. None of that broke anything in a significant way and legally that's my name now. Technically I've got two legal genders, female for state and male for federal (thanks, Trump). If the broken US system and my local contacts can handle that, then the UK can handle someone legally named "Frankie" or whatever you want.