Electrical giant Currys-PC World has been censured by the advertising watchdog for selling ultra-high definition televisions with bogus promises about extra clarity . The retailer claimed the smart LG sets with 4K resolution , starting at £849 , would allow customers to 'watch your favourite Christmas movies in greater detail ' . But the Advertising Standards Authority has ruled that this was exaggerated and misleading because no British TV channel is yet broadcasting in 4K resolution . These broadcasts are currently only available via internet based subscription services such as Netflix . False claims : Currys-PC World claimed that the smart LG sets , like the one pictured , would allow viewers to watch Christmas movies in 'greater detail . ' The Advertising Standards Authority found this to be 'exaggerated and misleading ' as no British TV channel is broadcasting in 4K resolution yet . Currys-PC World said the LG set has 'automatic upscaling ' to ensure images are sharper and clearer than on a normal HD set . Manufacturers including LG , Samsung and Sony have spent millions of pounds developing the technology – said to be four times sharper than existing HD TV . Currys-PC World said the LG set has 'automatic upscaling ' to ensure images are sharper and clearer than on a normal HD set . As such , owners of the sets would see an improvement in picture quality regardless of whether the broadcast was in 4K . An offer of a 'free trial ' of Amazon 's Prime delivery service has been banned after the watchdog found the online retail giant misled consumers about subscription fees . The direct mailing sent to consumers with Amazon accounts included a plastic card stating '30-day free trial ' , information about the associated Amazon Prime Instant Video and a letter . Small text at the bottom of the letter said : 'Paid subscription starts automatically after free trial unless cancelled . ' Six people complained that the ad was not sufficiently clear that a paid subscription would start automatically if not cancelled during the trial and did not state the cost of the subscription . The Advertising Standards Authority ( ASA ) said a paid subscription starting automatically at the end of the trial was a commitment and a significant condition of the 'free ' offer , and should therefore be made clear to consumers . But the ASA said the advert failed to give evidence of how effective this would be , although it accepted images may well be better on LG sets . It said : 'We also considered viewers would understand that the improved quality was achieved because the televisions were '4K Ultra HD ' , that this particular technology was therefore used to achieve the image quality and that the image quality achieved was subsequently of full and genuine 4K quality . 'Because there was such limited native 4K content available in the UK , we understood that any improvement in quality in films or programmes watched over the Christmas period was unlikely to be achieved by the use of 4K technology specifically . ' It ruled the advertisement should not be repeated . The first 'HD Ready ' sets and services emerged in 2006 to be followed by a new generation of sharper still 'Full HD ' TVs in 2011 and then 3D televisions in 2013 . Since then , there has been the super slim OLED screens that mean the sets can be hung on the wall like a work of art , together with curved screens claimed to improve viewing angles . And the innovations do not stop at 4K , as leading manufacturers are starting to demonstrate the new 8K TVs , which are eight times sharper than conventional HD sets and will be arriving in stores within two years . Currys-PC World said there were only three complaints to the ASA . A spokesman said : 'We will of course ensure future adverts are clear on this topic for customers . '
Claimed smart LG sets would show Christmas movies in 'greater detail ' ASA said misleading as no British TV channel broadcasting in SixK yet . Broadcasts currently only available on internet subscription services .