Source: Commons divisions
UK Parliament · Commons Division 245 · 23 October 2018
240 Aye / 287 No · lost by 47 · 4 tellers (not counted) · 1 both
Totals are Parliament’s official count, which does not include the tellers. Parliament’s published list names 239 of the 240 Aye voters and 286 of the 287 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.