Martin Howe, a solicitor who acted for the travellers, said: “This judgment will shake to the core all those who engage in racist conduct towards Irish Travellers and Romany Gypsies.
“The last bastion of ‘acceptable racism’ has come crashing down.”
The Traveller Movement, which was then known as the Irish Traveller Movement in Britain, had argued that a group of 15 attending its annual conference was discriminated against.
The group, including travellers, a police inspector, a barrister and a priest, was denied entry to the pub – which was next door to the event.
The pub manager refused entry to groups of delegates, saying he was concerned there might be trouble because the conference was focusing on evictions from the Dale Farm traveller site in Essex.
Tim Martin, chairman of Wetherspoon, said: “Wetherspoon apologises to the eight individuals who were denied entry and for any upset and distress this caused to them.
“In the light of the judgment, although we have always been fully committed to operating our premises in a non-discriminatory way, we will undertake a full review of our relevant policies, procedures and training.”