Presumably with a total restriction on foreign nationals entering India from 12:00 GMT local time on 13th March BA would need to cancel all flights to / from India effective immediately?
https://in.reuters.com/article/healt...-idINKBN20Y16K
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It also urged Indian nationals to avoid all non-essential travel abroad, in one of the most far-reaching advisories since the outbreak began in late December.”
https://www.iatatravelcentre.com/int...1580226297.htm
9. All visa and e-visa are invalidated.
- This does not apply to diplomatic, official, UN/International Organizations, employment, project visas.
10. Passengers with an OCI card are no longer visa exempt to India.