It's normally £16.90 which is a GREAT price anyway but with the £3 discount code it's a steal!
To get the code just subscribe to their mailing list via the form on the right hand side of the site. (You don't actually have to put your real email address as the code comes up straight away)
Kill Fleas Fast using Frontline Spot On For Cats - The UK's number 1 flea treatment for cats.
The treatment and prevention of infestations by fleas and ticks, in cats, and as part of a treatment strategy for Flea Allergy Dermatitis in cats. The product controls infestations with Felicola subrostratus biting lice on cats.