Would mass British antiwar protests change the First World War?

What if parts of England experienced mass antiwar protests after the Somme in 1916?

Britain would probably remain in the war, but protests could increase pressure to limit casualties and strengthen anti-submarine protection.

Mass antiwar protests after the Somme are judged unlikely to stop Britain's war effort in 1916. The government could respond by promising victory and insisting it was trying to avoid wasting lives. Generals might face greater pressure to limit casualties. Additional effort against the submarine threat is another possible response. These are suggested adjustments to the conduct of the war, with little change expected to the overall commitment.