This was actually Electrolux's 2nd Tango cleaner. The original -which as someone already suggested might have been Currys exclusive- were variants of what was then known as the Microlite.
The Microlite was developed around the original 'Lite' range but was of considerably poorer quality, featuring (or more to the point not featuring) no dusting tool, no all-round bumper, smaller motor, and cheaper tool kits. Originally made as a basic 800w model, as time progresed it went to 1000w and was avaliable ina choice of three models (stanadrd, autoflex, and autoflex electronic), whilst the 'Lite' carried on in quality as the 'Chic' and the 'Classic'. The microlite range was soon whittled back down to just one model (standard) which ran as late as 1997 and by then had a 1100w motor. But as well as this there was the Tango and Samba. Essentially they were the 'old' microlite autoflex and autoflex electronic cleaners respectivly. One was deep blue, one was bright orange. Both were horrid.
This Tango you have here, I first saw this in 2001, but as a cleaner which had a dust-box in place of a bag. It wasn't called Tango either. It was one of the first bagless cylinders Electrolux graced us with. It had Electrolux's own hose, with tool storage unit which clipped to hose handle. I later saw bagged versions with the AEG name. I'm sure yours is around the 2002+ era, if not later still, as the hose & extention tube on your cleaner is generic in style, like other cleaners have which are not Electrolux.