With filming due to begin next month on Star Wars Episode VII, three original cast members have been spotted in London. Harrison Ford, Carrie Fisher and Mark Hamill are reportedly in the city where JJ Abrams is about to launch production at Pinewood Studios. Although Disney hasn't confirmed the actors' involvement in the new trilogy, they haven't exactly denied it.

English actor Peter Serafinowicz, who voiced Darth Maul in Episode I, posted this picture after meeting up with Hamill in the English capital:

Met up with @HamillHimself in London today. I wonder why he's here. pic.twitter.com/zXpnxWaHyN

— Peter Serafinowicz (@serafinowicz) April 27, 2014

Ford was photographed by photographer Matthew Bell:

Harrison Ford chatting to the pilots of London's Air Ambulance in Grosvenor Square https://t.co/YJqX3KscBh

— Matthew Bell (@kertappa) April 26, 2014

While Fisher posted this cryptic tweet about her dog:

So my do dog Gary has been spotted in London, but apparently without me. Who has he been seeing? Let me know if you have any clues.

— Carrie Fisher (@carrieffisher) April 26, 2014

There are rumours Abrams will sit down for a 'big table read' with the cast today. But when can we expect the studio give us an insight on the movie? May 4th, the official 'Star Wars Day' is fast approaching and there's a lot of buzz about it on the Star Wars Twitter page. Some predict there will be a partial cast announcement on Sunday, leaving the full cast and title to be revealed at Comic Con in July.

1 week until Star Wars Day. This is not a test. pic.twitter.com/NwVooWOfie

— Star Wars (@starwars) April 27, 2014

So far, we know don't know much about the upcoming blockbuster, due out in December 2015. Although reports have emerged today, that Ford's Hans Solo will have a 'gigantic role' in Episode VII. Disney has been so secretive about the cast and plot, fans will just have to wait and see what the studio have up their sleeve. Until then, may the fourth be will you.