Power BI Consultancy - assistance with Data Model Design

Hi, this might not be the most appropriate group for this question but I cannot find something more suitable.

I'm looking to find a Power BI consultant who can help me make our data model more streamlined and efficient as it has got unwieldy and I do not have the experience to improve it. If this is not the right place to ask can anyone recommend people or sites? We're UK based but happy to work with someone remotely.

Thanks.