I'm from Singapore, and have been fully vaccinated with Pfizer/BioNTech in Singapore, and am likely to get a booster shot in Singapore in early January 2022 before I travel. I'm intending to travel to the UK as a tourist.
The UK accepts Singaporean vaccination certificates for entry into the UK, and hence I will not be required to quarantine at all, and will just need to take a Day 2 test (which apparently can be done at Heathrow Airport immediately after arrival).
The NHS has a contact tracing system, and they will notify you if you are a close contact of an infected individual. However, the NHS disregards vaccines administered outside the UK, and hence will treat me as an unvaccinated individual. This means that I will be required to isolate for ten days. This interpretation is supported by this article (in Norwegian), and TripAdvisor forum posts such as this one.
I know that they perform contact tracing with information from at least two sources:
- Seat assignment on the inbound flight into the UK
- The NHS track and trace app
I can minimise being a close contact on the flight by selecting a seat as far as possible from other passengers (flights from Singapore to the UK seem mostly empty in economy these days). It also seems that the NHS app is not mandatory, and apparently it is not required for entry into restaurants, museums, transport, and other indoor spaces either, so it doesn't seem like I will need to download it anyway. (Is this correct?)
So by question is: What other sources of information does the NHS contact tracing system use, and how might I minimise the probability of being quarantined while in the UK?
(Alternatively, if there is any information on how to get the NHS to treat me as a vaccinated individual, that would be a great answer too.)