If I am not mistaken , you need to provide only you are applying for the first time and from overseas (for fresh applications). So in this case you should be fine as you have been working here for the last 2 years. Even it is needed you my provide a Criminal Record Certificate from UK. See below si...

Hi, I am working in NHS for past 2 years, but I am currently Tier 2 dependant visa. Now I am moving on to a new training job from this August, which my deanery will sponsor. I have 1.5 year old police clearance certificate from my homeland with me.I have never been out of UK for more than 14 days si...