- Brexit could reduce UK GDP by between 2.7-7.7% by 2020 and up to 5.1% by 2030 according to OECD estimates, representing an economic cost of between £1500-5000 per household.
- The UK economy benefits substantially from EU membership and trade, with UK exports of goods and services to the EU representing over 10% of GDP. Leaving the EU could disrupt these trade and investment relationships.
- Immigration from the EU has increased in recent years and played an important role in UK employment and GDP growth, while EU immigrants contribute positively to public finances. Brexit could reduce these immigration flows with economic consequences.