In reply to Rog Wilko:
My dad could have been a similar case to Mr Bryan.
Like him, my dad came over in the '60s to join his parents and his younger brother. When he applied for a British passport 5 or so years ago, it came to light that he didn't have indefinite leave to remain as my grandparents hadn't applied for it for him (they had done so for his younger brother who came over with them as a baby).
Thankfully my dad's a canny sort and had years worth of the necessary extensive paperwork the wanted as proof he'd been living here as long as he has and is now has citizenship.
Hopefully Anthony Bryan gets it all sorted out soon.