I think I mentioned this last year, but it bears repeating: my UK publisher, Orbit, have been working on bringing some of my books out in Audiobook formats. (For licensing reasons, the US audiobook versions aren't sold in the UK.) The Rhesus Chart and The Annihilation Score are now available for pre-order in the UK (and, I assume, EU) as audiobooks from Audible; they'll be released in June, and hopefully subsequent Laundry Files books will be available as audiobooks faster.
Note: See CMAP: "Why can't I find audio editions of your books in the UK?" for more information on this. The first two novels have been available for a while; from book five onwards they should be routinely available from now on: I've no idea whether books 3 and 4 will ever be recorded (it costs a lot to prepare an audiobook and as these books have been in print for several years there's some question over whether they're commercially viable).