Online check-in systems will be used at BA to prevent passenger 'bottlenecks' at Heathrow Airport on Monday
There will also be an online queuing system to stop people waiting at check-in and at the gates to the planes
New tests will be made available to help passengers meet travel restrictions, including cheaper £40 PCR test
But BA chiefs say they don't expect people to get to airport earlier, saying measures will mostly be pre-travel
It comes as UK's international travel ban is to be lifted on Monday morning, with 12 countries on 'green list'