http://www.legislation.gov.uk/uksi/2019/832/article/2/made

The European Parliamentary Elections (Appointed Day of Poll) Order 2019

en

King's Printer of Acts of Parliament

2019-04-08

REPRESENTATION OF THE PEOPLE

Council Decision (EU, Euratom) 2018/767 (OJ No. L 129, 25.5.2018, p. 76) sets 23rd to 26th May 2019 as the period for the ninth election of members of the European Parliament.