Workers, migrants and civic leaders from London and Essex come to Southwark for a morning of reflection and celebration.
The 11am Mass is preceded by a procession of representatives from London's diverse communities, occupations and civic organisations.
Concelebrants: Most Revd Peter Smith, Archbishop of Southwark, Thomas McMahon, Bishop of Brentwood and the auxiliary bishops from the dioceses of Southwark, Westminster and Brentwood.
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