In reply to sidewinder:
Advice for US travellers to the UK:
Be cautious and aware of your surroundings.
Be vigilant, as pickpocketing, mugging, and “snatch and grab” theft of mobile phones, watches and jewelry can occur.
Do not leave bags unattended in restaurants, pubs, hotel lobbies, and parked cars.
Be alert to other criminal schemes, such as impostors posing as undercover police officers and “fining” tourists for bogus minor offenses. A legitimate Metropolitan Police Services officer will never demand an immediate cash payment.
Use only licensed Black Cabs or pre-ordered car services (minicabs). Unlicensed taxis or private cars posing as taxis may offer low fares, but in some instances, travelers have been robbed or sexually assaulted while using these cars. See Transport for London for additional information on cabs and car services.
Avoid using ATMs that look temporary in structure or location or are located in isolated areas – they may not be legitimate. Use ATMs located inside a bank branch.
https://uk.usembassy.gov/security-alert-u-s-embassy-london-december-16-2022...
China is one of the safest and friendliest places I've been. (Many times). The climbing community is more than welcoming and the climbing itself is incredible.
Don't be put off visiting, but maybe refrain for taking photos of police or military installations and you'll be fine.
Post edited at 17:00