Could be a deadend but the Netherlands Institute for Sound & Vision has launched this free site with a massive archive of TV and radio. Who knows what might be buried within? Hasten to add I've not tried using it myself!
I have hundreds of WAM clips from Dutch tv shows that have been sent to me over the last 35 years. If they are releasing Dutch tv archives restored to HD quality then there are many items worth seeing.
I have no spare time to search this new archive, but here are some notable shows worth seeing in HD.
1) RON'S HONEYMOON QUIZ: This 1987 wedding couples gameshow had lots of wetlook scenes with bridal parties. This show became more famous in 1992 in the UK as "Bob's Your Uncle" and I collected all the scenes from the UK series, as well as all the 1993 scenes from the Italian and Spanish versions of this show, but very few of the Dutch wet wedding scenes have shown up on YT. The Dutch show ran for 9 years so it would be nice to find more of these shows in Dutch archives.
2) OVER DE ROOIE: This was the 1995 Dutch version of the U.S. show called "Anything For Money" where people were interviewed in the streets and persuaded to do many kinds of wet and messy stunts. I collected the scenes from AFM and also other copycast shows like the UK show "Wudya Cudya" and the MTV show "Bet You Will" but I only have a handful of scenes from the Dutch version, so it would be nice to find more.
3) STAATSLOTERIJ SHOW: This was the Dutch version of the German game show called "The 100,000 DM Show", and was great for wetlook and underwater fans because in this show the girls would go into a water tank fully clothed and hold their breath while their partner answered the questions. Most of the scenes I have are from the German version and I have less than a dozen scenes from the Dutch version.
If you find any more of these shows on this archive....let us know.