The International Arbitration League was a society of pacifists run by working-class men.
The organisation was run by men from working-class labouring backgrounds who were against increases in military spending or intervention in continental wars.
It was funded by the Peace Society for its first years, which was a primarily Christian organisation that sought absolute pacifism.
Instead the League sought out arbitration, which was familiar with its membership, as the approach was known to work in labour disputes.
The radical reformer Howard Evans was at various times its chairman, vice-chairman, secretary and treasurer.