Is false advertising illegal UK? Under the Act it is an offence for an advertiser/trader to make false claims about goods, services or prices. ... EU laws also ensure that misleading advertising is forbidden in all Member States. 1/ I asked for a battery 249 Dynamic silver that you have advertised saying it has 95AH and CCA 850 and i went in bought what you advertised on your web page What i received was 249 Dynamic silver 90Ah and CCA720 which is not what i asked for and paid for . I wanted what you were advertising WHY did i not get the correct battery and what are you going to do about it ? Regards Not a happy customer