Clues from Season 4 bonus material "Find 815 ARG":
Penny's number '(020)7946 0893';
Penny's address '423 Cheyne Walk';
'Queen's College, Department of Physics and Southfield', where Daniel teaches;
'Camp Millar', where Desmond did his military time.
Also, Oscar Talbot refers to the journal being auctioned in Chapter 5 of the Find 815 ARG.