India might require an Extra Spinner in the Squad just as a Replacement - In case any Spinner gets injured or ill or even goes out of form and does not take wickets.
Otherwise I feel Spinners have No Role in England, unlike in India where we have Adverse Home Advantage - England have always produced Swinging or Seaming pitches that generally favour Fast bowlers rather than Puny Spinners - Unless there is a Muttaiah Muralitharan or a Shane Warne - Who were Classic Spinners and could extract Spin, Bounce & Turn from English wickets also and for that matter anywhere in The World they played they could get wickets without the Pitch helping their bowling style.
Such was their Class & talent.
The Current Indian Spinners are Not so Effective on Surfaces where there is No help for Spinners - So we might Require an Extra Batsman or more than 2 Batsmen to make upfor the Early Loss of Top Order wickets to The New Ball in my opinion.
Otherwise it is Best Left to BCCI & Selection panel
