Support for Britain to stay within the 28-member EU stood at 51 percent, ahead of support for Britain to leave the European Union, which stood at 44 percent, according to a poll conducted by Telegraph.

The poll also found that 5 percent of respondents were undecided.

The latest poll found that the percentage of voters wanting Britain to remain in the EU rose by four percentage points from Telegraph's previous poll last month.

The date of the poll and the sample size used in the poll were not mentioned.