I just retired from teaching and converted my non lmm B to a retirement visa. I gave the following documents...tm7 completed, copy of every page of my passport, landlady id card copy and house info, rental contract, certificate showing cancelled work permit, certificate from school saying i'm retired, letter from the bank certifying money in the bank and updated bankbook and printout of bank transactions for past 3 months.i didn't have to leave the country and was in immigration maybe 30 minutes. I hope this helps.