If your SEP has expired, before you can do the Prof Check, you need a Course Completion Certificate issued by an ATO, a DTO or an RF, then you need an EASA Examiner. Whatever happens, your lience has to be reissued by Gatwick with the SEP on the front, but the Exainer if UK, can issue you with a Temporary Certificate. I doubt that there are many locations in the US where you can combine these requirements with yours, but give it a try.