I think the fire was in an arch unit on the 'river' side of the line just 'down' of Southwark Park Road. Police had sealed off one of the roads (Rotherhithe New Road?) on the 'Surrey' side, but the fact that SouthEastern services were much worse affected makes me think it was on the other side. This was on the 0853 from FH. In my office overlooking Platform 1 at LB now and there's still a relative lack of activity on those lines.