In its three year anniversary under the LSL banner, First Complete had its best month for mortgage completions by number and volume ever in April.
The network said this helps to consolidate LSL's position as the fourth largest mortgage and protection network in the UK.
The number of First Complete's Appointed Representatives have increased by almost 10% over the past year from 733 to 782 making First Complete one of the largest networks in the country.
Toni Smith, sales operations director at First Complete said: "April was the best month for mortgages since First Complete began. While advisers have been feeling more positive for a while this is definite proof that the market is well on the road to recovery.
"For First Complete the last three years has been a real rags to riches story as we have moved from a loss-making business to one that has become successful and profitable under LSL. This success is in turn helping our future success as it has attracted almost 50 new members to us in the last year alone."