Jessica Ennis gears up for 'biggest years of life'

Jessica Ennis tells BBC Look North's Tanya Arnold the next two years will be the most important of her life so far, as she prepares to defend her heptathlon world title later this summer, and with London 2012 approaching fast on the horizon.

Ennis will compete this weekend at the Hypo-Meeting in Gotzis, Austria - one of the few full heptathlons she competes in each year, featuring some of the world's best.