Members and veterans of the Princess of Wales's Royal Regiment will parade up Borough High Street from St George the Martyr Church to Southwark Cathedral.
The regiment received the freedom of the London Borough of Southwark earlier this year.
At 3pm a service will be held in Southwark Cathedral to commemorate the 10th anniversary of operation TELIC IV in Iraq.
It was during this operation that Johnson Beharry earned the Victoria Cross.
St George the Martyr
Borough High Street, SE1 1JD
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