Yes and i used spellcheck.net. According to that there is no spelling mistakes VWM which are the mistakes that leap out of the pgae?
That one for a start.
There are many others on your site which are probably unchecked typos like the above. Unlike this forum however, your site is a front for your business, thus higher standards are expected.
The problem with spelling mistakes is that the reader will form an impression in their minds about the quality of the underlying business, and those that run it. In most cases, they are NOT going to tell you, they are going to form their impression and act on it.
There is also the matter of content quality. It seems that what there is is pretty basic, and experienced players are left with nothing worth discovering from your site. This would make them seek out a site with better content. It also depresses your rankings in search engines, so new UK players are less likely to see your site when making generic searches about online casinos.
I note that for Winner casino, you advertise the no deposit promotion, but it seems the site is basically just a "banner farm", with clicks going direct to the casino, and nothing in the way of being able to click through to a decent review of the casino being presented.
Rather than adding additional casinos, it might be better to construct a decent review on the ones you have so that players feel they have gotten to know the casino before leaving your site. This would encourage them to return the next time they are looking for a casino, as they would expect a similarly decent review to be available.
Before adding Winner, you should have checked over their site and noticed the ambiguity in their licensing, and sorted this out with your affiliate manager. You could then have explained this in your review, so that "your" players would have had a knowledge advantage over players going direct, in effect, you add value to their experience by them clicking through your banners, yet as far as the player is concerned, it is at no additional cost to them.
You may not necessarily know when players have problems, but you should be able to gain an impression through looking at your affiliate stats. If you see players join for just one or two sessions never to redeposit, it shows there could be a problem. You can compare stats like this between different casinos to see if it is specific casinos that are leading to this, or the type of players being driven to your site.
If you pull in too many "bonus hunters", the casinos will consider that you bring "bad traffic" to them. This might lead to your players being labelled as abusers right from the start, leading to them having negative experiences when clicking through your banners. It could even lead to the affiliate program taking action against you, something affiliates have experienced in the past with a number of programs.