Cornerstone Group

The Cornerstone Group is a High Tory or traditional conservative political organisation within the British Conservative Party. It comprises Members of Parliament with a traditionalist outlook and was founded in 2005. The Group's president is Edward Leigh and its chairman John Hayes. Many Conservative Party Members of Parliament and Peers belong to the Cornerstone Group, including several members of His Majesty's Government.

The Conservative Party incorporates three main schools of thought; along with the traditionalist-leaning Cornerstone Group, there are also the One Nation and Thatcherite elements. There is more than a degree of overlap between these groups, depending on the issue. The Cornerstone Group supports the unitary governance of the British state and opposes attempts to transfer power away from it — either downwards through regionalism and devolution, or upwards to the international control of the European Union. A manifesto released at the time of its foundation set out the Group's intentions:

We believe that these values must be stressed: tradition; nation; family; religious ethics; free enterprise. We want to use the leadership election to argue for principles and policies, not about personalities. We must seize the centre ground and pull it kicking and screaming towards us. That is the only way to demolish the foundations of the liberal establishment and demonstrate to the electorate the fundamental flaws on which it is based.

— Strange Desertion of Tory England: The Conservative Alternative to the Liberal Orthodoxy, July 2005

The Cornerstone Group appeared to be inactive after the 2019 elections (the source of the Cornerstone "About" page shows a last modified date in 2018); Sir John Hayes's Common Sense Group, launched in 2020 in the wake of Black Lives Matter with about 40 MPs, is said to revive the Cornerstone Group.