The 2025 Blessing of the River Thames in central London is on Sunday 12 January.
At 12.30pm processions will set out from St Magnus the Martyr Church on the north bank and Southwark Cathedral on the south bank to meet on London Bridge.
For just over 125 years the downstream London Bridge pavement ran under the tower of St Magnus which earlier had care of the 12th-century bridge chapel dedicated to St Thomas Becket.
This year St Magnus Cardinal Rector Philip Warner will welcome the outdoor congregation before Dean of Southwark The Very Revd Dr Mark Oakley introduces the celebration.
The annual event takes place on Baptism Sunday which recalls the baptism of Christ by John the Baptist.
The Greek Orthodox Church gathered last Sunday at Sonning for the Blessing of the River and Margate in the Thames estuary for the Blessing of the Seas.