Brokers at the network completed almost 3,500 protection cases and almost the same number of mortgage cases to total more than half a billion pounds worth of lending.
First Complete said this defied expectations for lending in a month where sales volumes would traditionally dip.
The announcement follows figures published in May that saw completions at the network increase 22% in the first quarter, compared to the same period in 2014.
Toni Smith, sales operations director for First Complete (pictured), said, “The results achieved this August are outstanding and full credit goes to all of our ARs who continue to outperform the rest of the market month after month.
“While the CML [Council of Mortgage Lenders] figures demonstrate that we are in a growing mortgage market, First Complete brokers have taken this to a whole new level, demonstrating the calibre of the firms that we have in our network and what can be achieved with a combination of the right support in the right culture.”