Source: Commons divisions
UK Parliament · Commons Division 25 · 28 June 2016
273 Aye / 295 No · lost by 22 · 4 tellers (not counted) · 1 both
Totals are Parliament’s official count, which does not include the tellers. Parliament’s published list names 272 of the 273 Aye voters and 294 of the 295 No voters; tellers are listed and marked but not counted.
Walking through both the Aye and No lobbies is a recorded form of deliberate abstention.