The National Archives is the UK government's official archive, containing 1,000 years of history. The National Archives' collection of over 11 million historical government and public records is one of the largest in the world. It safeguards some amazing pieces of history including The Domesday Book, the final version of the Magna Carta, the confessions of Guy Fawkes, William Shakespeare's will, letters claiming to have been written by Jack the Ripper, the SOS telegram from The Titanic and Adolf Hitler's fake passport.
This multi just takes you to a couple of points in the grounds of The National Archives, but feel free to explore inside at your leisure.
Stage 1. The cache co-ordinates will bring you to a plaque that commemorates the wartime history of the site. How many people in total are pictured in the bottom left and bottom right pictures? This is A. How many pictures are on the plaque? This is B.
Stage 2. Now go to N 51° 28.884 W 000° 16.881. C is the 5th number on Garth's plaque and D is the 8th.
Stage 3. Head on to N 51° 28.894 W 000° 16.880 where you will find two notices detailing some ground rules and some security information. How many telephone numbers are listed? This is E.
Finally, you can now work out where the cache is hiding: N 51° 28.ABA W 000° 16.CDE.