Support for Britain to stay in the European Union has risen two percentage points to 53 percent, according to an ORB poll for The Telegraph newspaper.
The Telegraph said support for support for leaving the 28-member block had fallen by three percentage points to 41 percent since an earlier poll published on April 5.
Six percent of those questioned said they did not know how they would vote. Britain holds a referendum on EU membership on June 23.
The Telegraph said the poll surveyed 800 people but did not give any further details.