This could possibly be the same event as 135DOV & 137DOV the homecoming of Sir Douglas (Earl) Haig, Commander of the British Expeditionary Force, on 19th December 1918.
Image courtesy of James Brazier
Further information courtesy of Derek Donnelly:-
With regards to the picture 136DOV, there is no sign of the Promenade Pier in the shot. The pier was requisitioned by the Admiralty in 1913 as a landing pier for the duration of the war and was returned to the public in 1919.The pier was demolished in 1927, so the parade shown in 136DOV could not be from 1918 but from another event after 1927, possibly the Kings birthday celebrations.