The Labour leader at the time of the referendum was luke warm about remaining at best. So much so I doubt he voted to remain despite what he said. He had a long history of criticism of the EU.

Actually, Jeremy Corbyn was pro Brexit as far as I can remember. Theresa May was a pro remain for example.

Gina Miller was the only one fighting against Brexit she even decided to vote in favour of libdem for the first time instead of labour…

So yeah… sorry but labour position was pro Brexit

The stated position of the labour party, and what they campaigned for, was Remain. At the time, there were many people like you saying one thing about Corbyn while he said another. Nobody liked Corbyn, so he surely must have been a Brexiteer! Despite him not having made Eurosceptic comments for many years.