Flight delay repay Bangkok-London?

[DressDrama]

Does anyone know if I'd be eligible to claim any compensation for a BA flight that was 5+ hours late arriving?

I know the EU delay repay protection rule applies within the EU but any knowledge of departing a non-EU country landing in an EU country?

Currently waiting on the flight still; however passengers been told the pilot is ill so we have to wait for another one to become available. He/she needs to have their legal rest time before they can fly again so it'll be 5 hours after the scheduled time before we take off. Doubt we can make up 2+ hours in the air (isn't the very minimum you have to be delayed by 3 hours before you're eligible to submit a claim?)

Thanks in advance, a very tired and exhausted DressDrama x

Bumping

If it's an eu airline landing at an eu airport then it's covered by the regs. However airlines argue that staff illness is an extraordinary circumstance. Its worth putting in a claim it's easy enough to do. Letter templates are on money saving expert site.