ESA appeal in 10 days. Got a letter today from welfare rights saying DWP couldnt give them the papers and could I send in mine. The return envelope doesnt fill me with confidence as where a stamp or frank should be it says in blue biro - no stamp required. Should I scan all the paperwork I have as a back up? Deliver it in person despite still having an open wound from stitches being removed last week? (from where the sun dont shine! lol)