You can discover a lot about scientific advances from going on a tour of a medical facility. Check to see if University College Hospital is open to the public while you are in town.
You'll soon see why this London City Centre health care institution is visited by many travelers. If you're looking for other things to see here, Buckingham Palace, Big Ben, and Trafalgar Square are in the area as well. They won't take you long to reach from University College Hospital.