Registered campaigners at the EU referendum were required to complete campaign spending returns if they spent more than £10,000 on their campaign.
If they spent £10,000 or less they were required to submit nil campaign expenditure returns
One hundred and twenty-three organisations and individuals registered with as campaigners at the referendum. Altogether, the 123 campaigners reported spending £32,642,158 on campaigning at the referendum.
- Remain: £19,309,588
- Leave: £13,332,569