Cdn Nationality
Can't speak for UK, but do know for Canadian passport ... i JUST did this for my boys, so the memory is FRESH
Canadian parent has to apply for cdn passport AND cdn CITIZENSHIP for child. If you can prove you need to travel shortly (just give them an itinerary for ANY travel --don't have to prove it's paid for), they will issue the passport within 14days or so. BUT it's only good for 1yr, as the child is NOT TECHINCALLY a Canadian Citizen (yet).
You also have to "apply" for citizenship, which takes (in my experience) a minimum of 6mths. This application gets sent off to Halifax adn then back (if approved) to HK. Child gets a credit-card sized Citizenship card. ---SHOCKING to me that they'll never get a Cdn birth certificate --- ahh..oh, yah ... they weren't BORN in Canada!! --had to remind myself of that one!!
NEXT, once you get the letter from the consulate that the citizenship is in, you take the 1yr passport back in, collect this new *card* and immediately apply for the *extension* on the 1yr liminted passport. Now they'll extend the passport for another 2yrs (so it becomes a legit 3yr infant passport). Once again, this will take a min. 2wks
Don't bother renewing your child's canadian passport BEFORE tehy're 3yso if you can manage, cuz after that, the passports are good for 5yrs. If under 3, it's only good for 3yrs. ... just a $$ and convenience issue
and YES Canadians can hold dual citizenship. I have it, my boys all have it and i'd suspect over 250,000 HK-Cdns have passports from Cda and HKSAR , and maybe even another to boot. i remember reading somewhere that Canadian passport holders are teh largest "foreign nationals" in HK ... ..
BE AWARE tho, that if your (Cdn) child is born outside of canada, HIS/HER children may have NO CLAIM to Cdn citizenship, if THEY THEMSELVES are NOT born IN canada ... May or may not be an issue, ... and as one consulate official stated, "you're worrying about your grandkids!! that's likely 30yrs down the line... by that time maybe NONE of us will have passports as we now know them." ... ?i don't know .. but something to be aware of
oh, and you'll have to provide proof of your (or dh's) canadian citizenship ... not just your passport ... like a birth certificate, i suppose
HTHs!