fraud? , I'm no lawyer but it sounds fishy to me if a company does not pass on a reduced rate in VAT .
A lot of companies quote prices as inclusive of VAT without specifying what the rate of VAT is. Many companies will be raising the non-VAT price of their products, so that the price to the customer will remain unchanged (i.e. the companies will be able to pocket that 2.5% quite legally) -but happily that's not the case here.
On a less happy note, the Government were considering raising VAT to 18.5% after the next election but that seems to have been scrapped for now.... although some in the Government were pressing for it to go up to 20%....