I was recently looking for a reasonably priced good vacuum cleaner when I came across this item and read the reviews on Amazon (reviews are for model 71060 but hardly any difference between the 2 models).
Link to reviews - http://www.amazon.co.uk/Morphy-Richards-71060-Performair-Cylinder/dp/B000HRMJMI/ref=pd_sxp_f_pt
Allergy one is usually £10-15 more expensive than the standard version so £55 delivered is a great price for it. £57.59 for the standard version on Amazon isnt a bad deal either! Both have free delivery
Performair 2000w Allergy Bagless Cylinder
The PerformAir cylinder vacuum cleaner by Morphy Richards offers maximum performance from its powerful 2000w motor. For allergy sufferers this cylinder is supplied with lifetime HEPA with anti-bacterial filtration, a click-to-clean filter system and a hygienic one touch bin emptying mechanism. All these features helped this product gain the British Allergy Foundation Seal of Approval.