Britain's Prime Minister Theresa May speaks at a campaign event in Bristol, Britain May 2, 2017. REUTERS/Peter Nicholls

LONDON (Reuters) - The Conservative Party of British Prime Minister Theresa May has a narrower lead over the opposition Labour Party than a week ago, an opinion poll published by research firm Panelbase showed on Wednesday ahead of a national election on June 8.

The online poll, which excluded undecided voters, gave the Conservatives 47 percent support, down two percentage points from Panelbase’s previous poll published last week, while support for Labour rose three points to 30 percent.

The Liberal Democrats and the UK Independence Party were unchanged on 10 and 5 percent respectively.

The fieldwork for the Panelbase poll was conducted between April 28 and May 2 and 1,034 people took part.