The Statement of 29 June of the Heads of State or Government of 27 Member States, as well as the Presidents of the European Council and the European Commission, confirms that “until the UK leaves the EU, EU law continues to apply to and within the UK, both when it comes to rights and obligations”. This includes the eligibility of UK legal entities to participate and receive funding in Horizon 2020 actions.
Source: http://ec.europa.eu/