Open API Specifications broken links

Hi, Im trying to download the API specifications for Companies House Public Data API, the swagger file has many references for, I replaced those with and it worked but the problem is that there are many sub-references as well to which can’t be fixed, so if we need to import the swagger file into a API management / test tool then import will always be missing many key parts including schemas, paths, resources, etc

Is there anyway to get proper Open API specifications / Swagger file please?