Thanks for the email. Running in to the same thing as Biz Kid though (but with Superfast broadband, so not listed as excluded).
The standard deal at the moment is TV, Netflix & Superfast Broadband for £43/month, with £105 cashback available through TopCashback (so effectively £38.63/month). The same bundle via F&F comes to £41.85/month. The problem comes from the Broadband; £18/month on the standard package, or £23/month with F&F "discount".
I gave them a ring and apparently it is working as intended. I might still take up the TV offer as that's a pretty decent price. But I'd sooner stick with Virgin for broadband if it's costing me a similar amount; an extra fiver a month triples my speed vs Sky.