Tesco's strawberry offer ran for 14 weeks, whereas its original higher price of £3.99 was available for a shorter length of time - breaching guidelines set under Consumer Protection Regulations.
Under the pricing practices guide, the lower price sale should not last longer than the time the higher price was available.
The case found that during various dates in summer 2011, the retailer sold 400g punnets of British strawberries marked as half price at £1.99, with the previous prices of £2.99 and £3.99 crossed out.
Tesco was fined £300,000 after admitting it had misled the public on the 'half price' offer.
More top news
In Edinburgh tonight you can hear it and feel it. The buzz, the banter of the day and the thrilling sense something big is coming tomorrow.
There is nervousness, anxiety and on the streets of Edinburgh fuelled by an atmosphere unlike anything seen before in recent UK politics.
How will the vote go? What would a Yes victory do to England? Policital Editor Tom Bradby answers readers' questions on the referendum.