Have just come back from my local Tesco Extra where they are selling their own airbeds for £6 and £12 respectively. Dimensions of single - L184 x W73 x H19cm. Comes with a soft touch flocked finish and polyester storage pouch. Seems like a good deal to me, hope it benefits someone.
(Don't actually know when it ends, but the site wouldn't let me post without putting an end date in - perhaps someone could enlighten me as this is my first post)