HI, your site looks good – all the info someone wants right away
BUT
1) Title tag: can be longer – about 60 characters
2) The title should be the same (or similar to your title)
3) figure out you keyword phrase – is it free bet betting or Free bets Uk or something else
4)your image alt tags aren’t bad — alt=”xxx free bets” – you might want to thing about
free bets WHAT? free bets sports, soccer, football, casino etc. Plus you use offers quite a bit maybe “free betting offers” might be a good one
5) in your opening paragraph you link to your main page – I would change that and link to other pages
6)I think the big font at the top Free Bets Betting is an image – that should be text (an H1)
good luck