In the UK the “Criminal Damage Act 1971” is most often used to prosecute acts of vandalism.
You can get up to 10 years (or possibly more in extremely serious cases) prison time for vandalism under the law.
Why you committed the vandalism is also taken into account. For profit? Through ignorance? Drunkenness? Jealousy? etc.
Stealing the copper electrical cable, to sell as scrap, that feeds an entire hospital or rail line is vandalism. Stealing the lead off a church roof is vandalism.
Smashing a bus stop because you’re drunk and the last bus didn’t come is vandalism.
Scrawling “Bob Woz Yuh” on a public restroom wall is vandalism.
That’s just how English and Welsh law operates. The man was a vandal. That’s not an opinion, but a legalese fact - as I currently understand uk law. But I don’t currently practice.