IF UK leaves EU on March 29th, do EU holiday makers have to leave the country?

hope someone can help me out. Couldn’t really find anything regarding my question.

I am a EU Citizen (Germany) and currently staying at my Girlfriends flat as a holiday in UK.

If the UK would leave right on the 29th of march, would i need to leave the UK right away or could i stay a couple of days longer past that date?

Would there be any trouble for me (somehow) at the airport when i would take a flight a few days later like start or mid of april 2019?

eu brexit citizen

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Is the UK still part of EU?

The UK left the EU at the end of 31 January 2020 CET (11 p.m. GMT).

Do I need a PCR test to enter UK?

From 4am, Tuesday 7 December all people aged 12 years and over must also take a PCR or LFD COVID-19 test before they travel to England from abroad. People who qualify as fully vaccinated must quarantine and take a PCR test before the end of day 2 after they arrive in England. Lateral flow tests will not be accepted.

What date did the UK leave the EU?

A timeline of the process is available on the European Council website. As a result, at 11pm GMT 31 January 2020 (10am AEDT 1 February), the UK formally ceased to be a member state of the EU.

UK officially leaves the EU

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