I recently sent an SRG1133 form to the CAA. Just so happens it arrived Monday 17 September!! They have now made me apply for the new EASA licence at an extra cost of £139 in addition to the £89 required for removal of the restriction on my FI Rating. Therefore, my application is on hold until I return the SRG1104 with copy of medical and certificate of revalidation!
Best submit both and save yourself the delay...