In these analyses, the OGQ takes an in-depth look at the following topic: The top advertisers on affiliate websites – Western Europe – Q4 2025. The data research tracks how often brands are featured across betting- and casino-focused affiliate sites in the countries analysed.

The top advertisers (gambling websites) on affiliate websites – Western Europe – Q4/2025

The chart shows which brands appear most consistently across Western European affiliate sites, split by betting and casino.

• Top performer is Bet365, leading the ranking in both betting and casino affiliate visibility.

• Betway and LeoVegas also show strong presence across both verticals, keeping close enough to stay highly competitive.

The top advertisers (gambling websites) on betting affiliate websites – Western Europe – Q4/2025

This chart stacks affiliate visibility by country, showing how much each market contributes to overall betting presence.

• Bet365 and Bwin sit at the top, driven by strong coverage across several of the countries analysed.

• Brands like LeoVegas and Betway follow with sizeable coverage, but their country mix looks less uniform.

• In most countries, more or less the same online gambling heavyweights dominate the rankings. In Spain, the ranking is led by Bwin and Bet365; in the UK, by Bet365 and BetMGM; in Sweden, by Betsson and LeoVegas; and in Germany, by Bet365 and Bwin.

For more info about this analysis and the methodology applied, see the current edition of the OGQ Magazine. Also, find more content in our data section.