Because the First World War was still underway at the date of the election, under the terms of the Parliament and Local Elections Act, 1918, the term of office of the members of the Council were extended by one year.
However, there were three new seats for which elections were held. These were new second seats for Allerton, Childwall and Little Woolton; Fazakerley and Much Woolton wards that up until this date had each been represented by a single councillor. Two of these three elections were uncontested,
After the election, the composition of the council was:
Caused by the resignation of Alderman Sir Charles Petrie, Bart (Conservative, last elected as an Alderman on 9 November 1910) which was reported to the Council on 9 November 1918
In his place, Councillor Frederick James Rawlinson (Conservative, Garston, elected 1 November 1913) was elected by the Council as an Alderman on 22 January 1919
Caused by the death of Alderman George Brodrick Smith-Brodrick (Conservative, appointed by the Council as an Alderman on 9 November 1917) on 12 February 1919
In his place Councillor James Wilson Walker (Conservative, Old Swan, elected 1 November 1912) , Tobacco Manufacturer of 37 Westmorland Road, Huyton was elected as an alderman by the councillors on 7 May 1919.
During the World War I elections were not held. When vacancies arose, replacement councillors were appointed by the Council rather than being elected in by-elections.
Caused by the resignation of Councillor Alfred Henry Bramley (Conservative, Wavertree, appointed 7 February 1917), which was reported to the Council on 4 September 1918.
In his place Lieutenant-Colonel Henry Langton Beckwith, Architect and Surveyor of Sunnyside, Sandown Park, Wavertree, was appointed by the Council as a Councillor on 9 November 1918
Caused by the resignation of Councillor Arthur Bromley Holmes (Party?, elected unopposed on 1 November 1914) which was reported to the Council on 4 December 1918
Caused by the election as an alderman of Councillor Frederick James Rawlinson (Conservative, Garston, elected 1 November 1913) on 22 January 1919
Caused by Councillor James Wilson Walker (Conservative, Old Swan, elected 1 November 1912) , being elected as an alderman on 7 May 1919 , following the death of Alderman George Brodrick Smith-Brodrick (Conservative, appointed by the Council as an Alderman on 9 November 1917) on 12 February 1919.
Caused by the resignation of Councillor Brigadier General Gerald Kyffin-Taylor (Conservative, Everton, elected 1 November 1913) , which was reported to the Council on 7 May 1919
Caused by the resignation of Councillor Ernest Cranstoun Given (Conservative, Sefton Park West, elected 1 November 1911) , which was reported to the Council on 7 May 1919