Just a heads-up for anyone traveling next week. From 15th June the entry requrement has just changed - daughter is traveling on 16th June and just received a text advising this
Travelers now need a negative PCR test within
24 hours of boarding flight to NL (it was 72 hours)
....or a negative PCR test 72 hours before boarding
AND now a rapid test 24 hours before boarding if you arrive after 00:00 on June 15th.
Here we go again

Hi there
This isnt new. Mid May 2021 I travelled to NL from UK and needed a (either a 24 hour PCR negative test or) a 72 hour PCR and rapid 24hr test.
You can avoid the latter if you get the Eurostar.