Hi dold
As you are in receipt of NS ESA and in the support group, when you apply for UC you should be placed in the LCWRA group without supplying a fit note .
What can happen when you apply for UC is that DWP may soon after you apply, send you a review form.
Most claimants who received disability premiums with their ESA are worse off under UC as there are no disability premiums.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems