Looks like BA are having lots of issues this morning
"Technical issues causing delays
Answer Id 7871 Updated 21/11/2019 09.02 AM (UK time)
Summary
We are sorry that a technical issue is causing delays to some of our flights this morning. Our teams are working hard to resolve this and get you on your way to your destination as quickly as possible.
We have rebooked those customers who are affected onto alternative flights and arranged hotel accommodation where it has been needed.
We are very sorry for any delays this might have caused to your journey. "
Again !
David
"Technical issues causing delays
Answer Id 7871 Updated 21/11/2019 09.02 AM (UK time)
Summary
We are sorry that a technical issue is causing delays to some of our flights this morning. Our teams are working hard to resolve this and get you on your way to your destination as quickly as possible.
We have rebooked those customers who are affected onto alternative flights and arranged hotel accommodation where it has been needed.
We are very sorry for any delays this might have caused to your journey. "
Again !
David