I have successfully used a vodaphone esim on dutch side incl a uk phone number two dec ago.... unfortunately, they no longer offer that option.

I did like vodaphone though the esim company i used is named something diff that escapes me.

Thx for airalo update. They were once a contender too.

As mentioned elsewhere, avoid gigsky on dutch side too.

Surely there's an esim that isn't blocked by the powers that be????