The Bridlington Principles are a set of rules aimed at resolving conflicts among trade unions.
The principles form the Trades Union Congress (TUC) code of practice that unions in England and Wales must adhere to as a condition of continued affiliation.
[1] First adopted in 1939 at the TUC's 1939 Congress meeting in Bridlington, the principles initially required that unions did not attempt to "poach" each other's members, in the interests of a cohesive, non-conflictual atmosphere of industrial relations.
References to situations where a union is currently engaged in organising activity were added.
The 2019 update also set out principles for joint working arrangements on industrial campaigns in multi-union environments.