Slotzo used to be powered by Aspire Global, both in terms of licence and platform, but the company's decision to leave the UK means the site is currently unlicensed. Below, we have listed some good alternatives instead.
Slotzo had quite a lot of sister sites before Aspire Global left the UK market. If you want to find out which those sites were, we have listed them below.

Slotzo has been around since 2020 but despite this, there is some uncertainty with regards to the ownership. While Fortuna Gaming handles the marketing side of things, also working with the likes of King Casino and Dream Jackpot, we haven't been able to track down the actual owner.
This matters little, however, as we know that Aspire Global operates the site with its platform. This means that there is a plethora of sister sites to check out, many of which are more well-known than Slotzo (and maybe even a little bit better!).
As Slotzo is partnered with Aspire Global, there are numerous sister sites to check out (as highlighted above), including some that are also partnered with Fortuna Gaming.
Just like Slotzo has opted to entrust Fortuna Gaming for the marketing side of things, Jupiter Gaming has done the same for its brands, including Dream Jackpot. So mentioning the site as the best sister here feels appropriate.
Both sites are slightly jagged; however, the dream site is perhaps a little more organised, enhancing the experience. Nevertheless, the freedom to search for different providers carrying over - and a lot being on offer - is a real decider for this top spot.
Atlantic Spins is a really good example of the best of Aspire Global. The site has a refined interface with a quality design which allows customers to easily browse different games without feeling overwhelmed or put off.
Of course, this should be a necessity for a casino. However, we have found that a few sites lack this commodity, which can certainly be a bit frustrating. This is not an issue with Atlantic, thankfully, and this is why it features here.
Despite it mainly being a sports bookmaker, Betiton deserves a place on this list thanks to the variety of different games offered by the 'complete' option. As it hosts a casino too, it's a great example of what Aspire is looking to offer.
There can certainly be questions about the quality. However, with some definition and renovation, this could be one of the bigger sites on the license. For now, though, it may just be one to try and take it from there.

I would describe myself as an experienced punter, having taken a liking to horse racing in particular. My interest in sports is also what made me pursue a career in writing, graduating with a Bachelor's Degree in Journalism from UCFB in 2024.
At FindSisterSites, I'm responsible for testing bookies and providing our readers with the necessary sister sites insight. I try to make the most of my previous encounters with bookies to highlight what is good, bad and in between.