41northpole
420
As mentioned.
Science Museum also now has the prototype 'Long Now' clock there, so well worth look
Marcus is no longer a shop on Bond Street as they ere planning some other method of sales, but I don't know what
As mentioned Watched of Switzerland on Regent Street is Huge and a short walk from Bond Street and the Burlington Arcade. I second the Harrods Food halls, just amazing
Have a great trip
Tim