If you are looking for me to provide a letter this would require being instructed on a professional basis, however we do not offer that service. I would advise however you seek this from the gambling commission, they will not charge for tis and are the relevant legal authority to confirm you are out-with their regulations i.e a skill based website and not gambling (for the sake of the relevant Act). If for any reason they do not accept this you could look at instructing a local solicitor to review yuor company and provide a letter. However the GC should be sufficient to confirm this.
I shall provide you with a helpful link that will assist you in finding a solicitor/representative near your local area. This will provide you with someone nearby your area who can assist you if required.
I hope this information proved helpful. You will find a local solicitor who deals with these matters on the law society webpage which is as follows;
https://www.lawsoc-ni.org/solicitors (N. Ireland)
Hopefully, I have answered your query in a way that is simple and easy to understand. If anything remains unclear, I will be more than happy to clarify it for you. In the meantime, thank you once again for using our services.
Should you require any further assistance on this matter, please do not hesitate to post a further questions for additional assistance.