Hi Tom,
Welcome to the forum, I’m new here as well 
I think your site looks good but there is a few things that I would recommend you to do.
First of all, when people visit your site it’s all about catching their eye. It’s always good to have great offers or good deals at the top so the visitor will get interested. It’s also about having everything simple and clear so people can find what they are looking for.
A top 3, 5 or 10 list is always good! Then the visitor can easily see what you recommend and what the best deal is, (instead of having to sit half an hour to find the best bonus).
I would also change the top bar, so you would start from the left with “home”, “Bingo”, “Casino”, “Other Games” (since they belong together) and then about and newsletter to the right.
Also if it’s possible to change “recently added” to “News”, try to always make it interesting for the visitor. The visitor want’s to read “unique offers” , “great deals” & “top casinos/bingo rooms” etc…
A good thing to do is to have a look at some big sites that you know are doing well, you can always find ideas there!
Hope that some of it helped
Cheers,
Elin
Wagershare
skype: elin.wagershare