(19)

(11)

EP 2 218 246 A2

(12)

(88) Date of publication A3: 25.06.2009 (43) Date of publication: 18.08.2010 Bulletin 2010/33 (21) Application number: 08848090.0 (22) Date of filing: 10.11.2008

(51) International Patent Classification (IPC):  H04L 29/08(2006.01) (86) International application number: PCT/GB2008/003778 (87) International publication number: WO 2009/060223 (14.05.2009 Gazette 2009/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 10.11.2007 GB 0722117 (71) Applicant: Blue Whale Systems Limited Chiswick, London W4 5PY (GB)	(72) Inventors: MAGUIRE, Michael Chiswick, London W4 5PY (GB) SEWARD, Richard Chiswick, London W4 5PY (GB) (74) Representative: Wood, Graham  Bailey Walsh & Co LLP 5 York Place, Leeds LS1 2SD Leeds LS1 2SD (GB)