Originally Posted by corporate-wage-slave

Usually when BA are pro-active in this area - which isn't that often - the eVoucher is an ex-gratia payment for the mess, but you can and should claim EC261 if that applies. And I think it does here since I think you can failry argue that 3 hours of this was BA/IB controlled. The baseline for that is 250€ / £220 per passenger, unless there is a connecting flight involved.