I wish I could put it as eloquently as
Les Grossman. (strong language)
ARN - LHR CE 25th.
LHR - JFK F 26th.
JFK - LHR CW 30th.
LHR - ARN CE 31st.
My plan is to wait until BA announce a contingency schedule. If any flights are affected then time to call to make arrangements. Canceling is the very last option.