My family is in a similar situation to many here. The UK is nice for a long summer holiday but unless they radically change their immigration rules, that's all it's good for in my opinion. I wouldn't want to earn GBP anyway.
Is there actually any reason at all that UK (England & Wales) Marriage Certificate is better than an HKSAR Marriage Certificate?
If anything, I guess the fact that the HKSAR Marriage Certificate is bilingual makes it more usable in English & Chinese language countries.
Looking at this - 4000+ cases in 2016. Second to Chickenpox in terms of notifiable infectious diseases.
Centre for Health Protection - Number of notifiable infectious diseases in 2016
Had heard earlier from another parent that they had a TB infection reported in their school earlier this week.