Credit Card fees for buying Virgin tickets

Virgin has an abusive policy with regards to their credit card charges when you buy flight tickets on the Virgin website. It can cost you up to £29.95 in credit card processing fees to purchase a Virgin flight on their website.

BA charges a flat fee of £4 per credit card transaction. Air France charges a fee of €1.

When I challenged them on their relatively high transactional fees they simply replied by saying that its not their fault but that of the credit card companies. This is nonsense as most retailers absorb the transaction fees levied by credit card companies as part of the cost of doing business.

I wanted to warn others as their practice masks higher costs to purchase a ticket with Virgin.

Who can I lobby to encourage them to rethink their abusive practices?