It's not selling as it's overpriced, not being funny, about £1200/£1400 would be what I'd be looking to pay for that.
Cheers for the advice 
But when i look on autotrader theres ones like mine up for a similar price or maybe £1800
My girlfriends stepdad only paid £300 for an 02 plate 1.8 Astra Sri with 45k on the clock and full history, paid the same for an 04 megane £500 for an 02 clio 172. He sold the Astra for £1100 seeing as yours is a year newer I'd say it's worth a bit more, but I think you'll struggle to get near 2k for it, hope you do though.