Upvote:3
As usual, the source to get the most up to date information is the UK government's "Check if you need a visa" page.
In your case, it states:
You’ll usually need a visa to come to the UK
In most cases, you must apply for a Standard Visitor visa.
When you might not need a visa
You may be able to apply to come to the UK for free instead of paying for a visa if your partner or family member is a British citizen or from another European country.
If your family member is a British citizen
If you’ve been living with your British partner or family member in another European country, you may be able to make a ‘Surinder Singh’ application for a free family permit. Eligible countries are countries in the EU, Switzerland, Norway, Iceland and Liechtenstein.
If your family member is from another European country
You may be able to apply for a free family permit if your partner or family member is from the EU, Switzerland, Norway, Iceland or Liechtenstein. They must have been living in the UK before 1 January 2021.
As far as I understand it, due to Brexit, the first exception is actually no longer possible since 29 March 2022. The second does not apply to you.
So yes, he will need a visa.