Enjoy the classic taste of McVities digestives, now with 30% less fat. McVities Light Digestives are ideal if you can"t resist a biscuit (who can?) but are keeping a bit of an eye on the waistline.McVities Light Digestives are the ideal option for the dunkers among you - dunk away with 30% less guilt. Or to look at it from another perspective, you can now eat 30% more biscuits with the same results.