I use advocate and my girl is doing well off it.......if you can get a perscription off your vet you can get 12 months off the net for about £80...but you do need a perscription.

Only down side is I need to limit contact for 24hours or I get covered in it also.......and last time I check I didn't need treating for fleas or worms

I get Fibrospot which according to the pharmacy is same ingredients as Frontline just cheaper which is always a bonus, and have been using Cestem worming tablets, Rosie has not had any fleas yet and I used to use the cat version for my Diesel when she was alive and she's never had fleas or worms whils using their products