In writing Music Mania I came across Reuben Torrey & Charles Alexander, noting on p.165:

In 1905 Torrey and Alexander (a preacher-singer combination in the style of Moody and Sankey) took over Albert Hall Mission for 85 consecutive days, performing to 10,000 people every day!

Today they are certainly less well known than Moody and Sankey and their revival missions (held around the world and in major the cities of the United Kingdom) have been overlooked. I have just concluded reading a 1905 biography on the pair.