I attended the 2016 London Leica Meet and took my 1986 M6+ three lenses. Film was 2005 outdated 'Tudor' ( FUJI) 100 which i rated at 64 ASA and had processed by Boots of Brentwood High Street to 6x4" and I scanned prints with my HP Scanjet 4570c + Vuescan Pro + PhotoShop 7 -- my 1965 M2 has shutter problems so did not take any B&W.
All here on my 1966 35mm f1.4 Canadian Leitz Summilux