Find, compare and claim welcome offers of Hotstreak Casino's sister sites in the UK. Hotstreak Casino is owned and operated by Grace Media Limited, using the Delasport sportsbook.
In addition to Grace Media-powered sites, we can thus also look at those with the Delasport sportsbook, most notably Hollywoodbets.
Hotstreak Casino has been around for quite a few years now, and since it's owned by Grace Media, there are many sister sites for punters to check out. If you take a look at Grace Media's UKGC licence, there are around 40 active domains (at the time of writing, of course) and most of them are white-label solutions.
Hotstreak, on the other hand, is one of the few sites Grace Media fully owns (thus not a white-label site). This is shown by the fact that it offers a sportsbook, which came to life in 2025 after a deal was struck with Delasport. Subsequently, Hostreak is the only complete product on the Grace Media licence and that is indeed enticing.
Hotstreak has a lot of Grace Media sister sites, some of which we will discuss further below, but the best sister site actually comes through the sportsbook in our opinion.
Compared to the best of the best in the UK, you would probably describe Hollywoodbets as average. However, when compared with the Grace Media sites, it's miles ahead of the competition. We aren't just talking about a reputable brand across various markets, but also a site with a very good product.
The site was revamped not too long ago, as part of the Delasport deal, and everything got so much better with that change. On the sportsbook side of things, you can find things such as early payout and impressive market depth. As for the casino, the library is stacked with the big providers and games, while the layout is great.
As the only other site that is fully owned by Grace Media, at least based on the licence information, it makes sense to mention Royal Valley Casino here. The design is exactly the same, even the colour scheme if you exclude the logos, and the welcome offers are also identical. In short, an obvious sister site.
This also means that there isn't huge value to having an account on both, aside from claiming the offers. On the other hand, it's the perfect choice for those who want a similar bookie to Hostreak, with the same casino library on offer. The sportsbook is lacking here, though, which is something to take into account.
Royale Lounge is another site on the Grace Media licence, but it's not owned by the company as the UKGC lists it as a white-label option. Either way, just like with Royal Valley Casino, the design and navigation are exactly the same on this site. Oh, the colour scheme does differ a little, so that's something!
In terms of the casino offering, you know the drill. There is no difference compared to Hotstreak casino and again, you could question if signing up here is even worth it beyond the offer. It does live up to the expectation of being similar to Hotstreak, though, so we suppose that's a positive.
Isak is the editor-in-chief of Find Sister Sites, having taken an interest in how betting and casino sites are structured after testing many of them in his role as a gambling writer. At Find Sister Sites, he is responsible for identifying 'hidden' sister sites and keeping the content up-to-date.