Suggest Treatment For ADD

Hi, I am a 36 year old female with ADD (inattentive), I have recently relocated to the UK and have been taking Strattera and concerta for my ADD and escatalipram for depression. I function well on these medications and find them helping my condition. I bought my letter from my previous psychiatrist regarding my medication and have been seen here by a specialist whom has assessed me and allowed me to carry on with my medication. I recently applied for a job and one of the conditions is to complete a post offer health assessment for review by an occupational advisor. I am quite afraid that I will be discriminated against regarding my medication and not be able to continue with the job as one of my medications is a controlled drug. Am I overanalysing on this or can they not offer to continue my employment? My past work history has been good and I am functioning well on this medication.