Anyone flying through Heathrow after Montenegro stop?

[arkansastraveler]

My husband and I are on the October 2 cruise from Malta with the renewed stop in Montenegro. We booked our own air with BA with a transit stop in Heathrow. Even though the GOV.UK site says transit passengers that have been in a red country can transit through heathrow if they do not leave the secured area, the passenger locator form makes it look like we can not do that?  Does anyone have any better information or suggestions? It will have been 8 days between the kotor stop and flight home. 

[vslparis]

Perhaps if you call BA and talk to someone while you have their passenger locator form pulled up on your phone ( or in another tab on your computer) , along with the gov.uk site in another tab they might clear things up for you.

I find it hard to believe that an airline  would have different rules than the offical government site , but I have seen it and the airline site was in error.