The opening sequence was filmed outside the Banqueting House in London. It's one of London's royal palaces, and has an impressive roof painted by Rubens showing the majesty and 'divine right' of King James 1 - almost the last thing Charles 1 would have seen before his death. Ironic.
The re-enactment sequences were courtesy of the Sealed Knot - fabulous fun. See them in action if you can - they're brilliant.
And then the final sequence was shot at Carisbrooke Castle on the Isle of Wight, where we also filmed for an earlier module (see 'Magna Carta').