United Kingdom European Union membership referendum, 2016/External Links

Official campaigns

 * Vote Leave - official EU-exit campaign website.
 * Britain Stronger in Europe - official campaign to remain in the EU.

In

 * HM Government: EU Referendum - UK government website supporting the UK remaining in the EU.
 * Academics for Europe - pro-EU group representing supporters in higher education.
 * Business for New Europe - group highlighting the economic case for remaining in the EU.

Out

 * Leave.EU - alternative campaigning group.
 * Grassroots Out - pro-exit campaign supported by the UK Independence Party.
 * Democracy Movement - independent anti-EU campaign.

More groups

 * EU referendum: 10 alternatives to the official Leave and Remain campaigns - BBC list of smaller campaigning groups on either side.