Fox Home Entertainment has celebrated the release of Star Wars: The Complete Saga Blu-ray disc set, by holding events all week, climaxing with a party tonight in London that'll see the BT Tower become a giant lightsabre.

The UK was the first to release the box set on Monday, and events this week saw cast sign autographs and an army of Stormtroopers march through the capital – a sight sure to keep hoodies at bay whether they are wandering Jedi or London's looting louts.

The celebrations culminate in a star-studded bash set to kick off at 8pm when Anthony Daniels – aka C3PO – switches powers on this blue ray and transforms the BT Tower into a lightsabre fit for a giant. It'll stay on for one night only, while the party is on in full force at the top of the building.

So if you live in the capital, keep your eyes on the skies around central London from 8pm tonight and remind anyone who points out a UFO, that it's just a bunch of Star Wars fans. They'll understand.

For a selection of pictures from this week's festivities, check out the official Star Wars blog's Facebook page. ®