I think Sri Lanka were undone by Junaid Khan in the match they lost in the UAE. I have not seen these Indian spinners play. I don't know what sort of lines they ball but judging from the Pakistan series England batsman are susceptible to spinners who bowl a straightish line rather than big turners due to the lbw. Ajmal summed it up pretty well when he said his trick was to bowl the off-spinner and the doosra at pretty much the same line to create a doubt in the mind of the batsmen.
I think England should think about giving Bresnan and Finn a chance. If I were an England selector I would play Anderson, Broad, Bresnan and Swan in SriLanka and in India I would play Finn, Broad, Monty and Swan.