Jquery Ajax Get request

I am getting this error No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://rcidirect.co.uk:8109’ is therefore not allowed access. The response had HTTP status code 401

But that domain is in my application specification !

What am I doing wrong ?

These are my request headers:
Request URL:https://api.companieshouse.gov.uk/company/05961102
Request Method:GET
Status Code:401 Unauthorized
GET /company/05961102 HTTP/1.1
Host: api.companieshouse.gov.uk
Connection: keep-alive
Accept: application/json, text/javascript, /; q=0.01
Origin: http://rcidirect.co.uk:8109
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.80 Safari/537.36
Authorization: Basic <>:
Content-Type: application/json
Referer: http://rcidirect.co.uk:8109/RCIDirect/site/initFinancingVN.do?process=true
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8