The crew from Time Time has gotten permission to dig at Holyrood House, WIndsor Castle and Buckingham Palace. Several news sources had articles on the digs, which were taking place this weekend.
From The Sunday Times – History digs into royal lawns
From The Guardian – TV ‘diggers’ given access to royal premises
Another from The Guardian – Time Team digging for royal secrets
From The Scotsman – Queen orders TV’s Time Team to search for palace’s secrets