as long as you remain in transit and your luggage will be checked through to London on same ticket, is possible. If you need to do a self-transfer (ie checkin luggage on a new flight) then need new TP, insurance, PCR test/hotel etc.
Heading from where to where? Domestic connection? General speaking you will need to do either test n go or sandbox. Test n go can do just one night then travel elsewhere.
didnt used to be this way. Used to be that you used the QR code on the pink paper given to you and then you chose your own hospital with no need for hotel. Too many idiots didnt show for the second test so here we are with this mess
Test n go day 1 can stay anywhere within 5hr of port of entry by road. Then can travel anywhere but must report for day 5 test to a suitable hotel near where you will be at that time. Non negotiable - must stay in hotel for day 1 and day 5
lets put it this way. You need to be tested to prove that you were previously infected. The doctor needs to be convinced that you are no longer infectious and 14 days seems to be the commonly accepted timeframe before one may be medically cleared. Herein lies the issue - where does that 14 day period begin. On the word of someone who took a "home test" without any way to back it up. That is why the PCR test at hospital or other facility is needed - doctor can confirm when the 14 day period started.