Well, to be honest after Brexit I only ordered one thing from the UK.
It took more than a week to be delivered. According to track and trace it lay for three days at a Belgium port to be cleared by customs.
Here in NL we are spoiled, we expect goods to arrive the day after ordering, two days waiting time at most. Half of the time same day delivery is possible with bol.com (the Dutch equivalent of Amazon).
The advantages of a small sized country.
Goods shipped from Germany or France take a day longer. Goods from the UK forever and a day nowadays.