Compiled by EveryElectionResult.com's data team · Last updated 2026-08-30
Llandaff and Barry was won by Labour at the 1945 general election, with a majority of 6,598 votes over Conservative. This page covers every general election in Llandaff and Barry from 1918 to 1945.
Full Election History, 1918–1945
Election
Elected
Votes
Vote Share
Runner-up
Majority
Turnout
1918
William Cope (Unionist)
13,307
62.0%
Russell Lowell Jones (Labour)
6,700 (31.2 pts)
63.0%
1922
William Cope (Unionist)
13,129
44.2%
James Alexander Lovat-Fraser (Labour)
4,098 (13.8 pts)
76.8%
1923
William Cope (Unionist)
11,050
37.9%
Elfyn William David (Liberal)
837 (2.9 pts)
72.1%
1924
William Cope (Unionist)
15,801
46.7%
Charles Ellis Lloyd (Labour)
4,192 (12.4 pts)
80.2%
1929
Charles Ellis Lloyd (Labour)
21,468
40.8%
William Cope (Unionist)
2,669 (5.1 pts)
82.5%
1931
Patrick Munro (Conservative)
33,590
60.7%
Charles Ellis Lloyd (Labour)
11,823 (21.4 pts)
81.8%
1935
Patrick Munro (Conservative)
29,099
51.3%
Charles Ellis Lloyd (Labour)
1,422 (2.5 pts)
77.0%
1945
Arwyn Lynn Ungoed-Thomas (Labour)
33,706
47.5%
Cyril Harry Alfred Lakin (Conservative)
6,598 (9.3 pts)
73.8%
Full Result Breakdown by Election
1918
Candidate
Party
Votes
Share
Elected
William Cope
Unionist
13,307
62.0%
Yes
Russell Lowell Jones
Labour
6,607
30.8%
No
Charles Frederick Gilborne Sixsmith
Independent
1,539
7.2%
No
1922
Candidate
Party
Votes
Share
Elected
William Cope
Unionist
13,129
44.2%
Yes
James Alexander Lovat-Fraser
Labour
9,031
30.4%
No
John Claxton Meggitt
Liberal
7,577
25.5%
No
1923
Candidate
Party
Votes
Share
Elected
William Cope
Unionist
11,050
37.9%
Yes
Elfyn William David
Liberal
10,213
35.1%
No
Thomas Worrall
Labour
7,871
27.0%
No
1924
Candidate
Party
Votes
Share
Elected
William Cope
Unionist
15,801
46.7%
Yes
Charles Ellis Lloyd
Labour
11,609
34.3%
No
Elfyn William David
Liberal
6,389
18.9%
No
1929
Candidate
Party
Votes
Share
Elected
Charles Ellis Lloyd
Labour
21,468
40.8%
Yes
William Cope
Unionist
18,799
35.7%
No
David Evans George Davies
Liberal
12,352
23.5%
No
1931
Candidate
Party
Votes
Share
Elected
Patrick Munro
Conservative
33,590
60.7%
Yes
Charles Ellis Lloyd
Labour
21,767
39.3%
No
1935
Candidate
Party
Votes
Share
Elected
Patrick Munro
Conservative
29,099
51.3%
Yes
Charles Ellis Lloyd
Labour
27,677
48.7%
No
1945
Candidate
Party
Votes
Share
Elected
Arwyn Lynn Ungoed-Thomas
Labour
33,706
47.5%
Yes
Cyril Harry Alfred Lakin
Conservative
27,108
38.2%
No
Morgan Edward Bransbury-Williams
Liberal
10,132
14.3%
No
Margin Over Time
Winning margin (percentage points) at each election, coloured by the winning party.
Trend
Llandaff and Barry has been contested at 8 general elections on record since 1918. Parties that have won a seat here over that span: Unionist, Labour, Conservative.
Frequently Asked Questions
Who won Llandaff and Barry in the 1945 general election?
Labour won Llandaff and Barry in 1945 with 33,706 votes (47.5%), a majority of 6,598 votes over Conservative in second place.
Which parties have won Llandaff and Barry since 1918?
Since 1918, Llandaff and Barry has been won by: Conservative, Labour, Unionist.
What was the closest result in Llandaff and Barry?
The closest result on record for Llandaff and Barry was 1935, when Conservative beat Labour by just 1,422 votes (2.5 percentage points).