Mortgage applications at Stonebridge Group saw an annual increase of 32% to reach £5.607bn.
General insurance business places through Stonebridge increased 20% to £464,000, whilst general insurance premium levels were up 26% on the first three quarters of 2016.
Almost half (47%) of the mortgage business completed by Stonebridge was a remortgage, while 17% was a buy-to-let.
The network has 538 active advisers spread across 258 firms, up from 500 across 226 firms in 2016.
Richard Adams, managing director of Stonebridge Group and Stonebridge Genus, said: “There’s no doubting 2017 has been a very interesting year, particularly in the mortgage market, and unsurprisingly it has been the remortgage sector that has underpinned much of our mortgage market growth.
“Interestingly, for all the talk of a ‘crisis’ in buy-to-let with the greater level of regulatory and political intervention in the sector, our buy-to-let mortgage business has held up very strongly.
“It will be interesting to see how much growth we see in limited company buy-to-let, particularly for purchase, in the months ahead as this appears to be an area where there is an increase in demand and more lenders willing to offer such products.”
Stonebridge launched their Genus proposition for directly authorised firms, which has grown to have 230 advisers using the proposition.
Adams added: “Both our network and Stonebridge Genus propositions are focussed on offering advisers all the support, technology and provider access available in today’s marketplace and we have ambitious targets and plans for 2018 that we will be shortly announcing.
“These figures are down to the hard work and dedication of all our advisers and we will be striving to offer them access to all kinds of business opportunities over that period.”