During the Australian mortgage lending slowdown of the last twelve months, AMP Bank has slipped relatively under the radar, with the mortgage book increasing 19 per cent in the year to May and nine per cent in the last three months, according to Australia Prudential Regulatory Authority monthly banking statistics.At May 2008 the book was $7.6 billion, up $1.2 billion in a year with the bank picking up 2.7 per cent of market growth on a funds flow basis in the last three months, or 50 per cent more than its share the previous three quarters.Robert Slocombe, head of product marketing and strategy at AMP Bank, said much of the recent growth has been through aggregator channels."On our lending side we have an interesting distribution model in that we are effectively an intermediated bank."We sell our mortgages through financial planners and mortgage brokers, and significantly in the last twelve months we have added some of the big aggregators to our panel, and those guys have been giving us good business."Mark Hewitt, general manager sales and operations at Australia's largest broker AFG, supports comments made by Slocombe, saying the AMP Bank product range is competitive and an alternative to dealing with the major banks."We have seen their share of our business increase recently - in the last three or four months."Regarding the strong mortgage inflows in the last three months, Slocombe said there was a combination of factors."We have been well positioned in the market with some of our products and prices, but I think the distribution side is quite important."Anecdotally we are hearing some of the brokers have moved away from some of the non-bank and smaller bank lenders and come to us, and part of that is because of the fact we don't have a distribution model which has a lot of channel conflict."Of loans, a significant proportion comes through the broking and aggregator channel, a smaller proportion through the financial planning channel, and a very small proportion comes direct."The pricing that we have in our book at the moment on flow, on new business coming through the door, is priced looking at the funding sources that we have - so our focus is very much about profitable and stable growth."