Equifax, which conducted the research, also identified Milton Keynes (£26.6m), Bristol (£19m) and Colchester (£18m) as growth hotspots.
For the market as a whole residential and buy-to-let mortgage sales increased by 1.2% from September to October 2015, down from 8.5% a year ago.
In London sales volumes fell by 1.1%, although at the other end of the spectrum they increased by 10.4% in the North West.
Iain Hill, relationship manager at Equifax, said: “Market growth has softened. With October mortgage sales volumes increasing by only 1.2% it certainly indicates that buyer confidence is being affected by economic and housing market uncertainty.
“As we rapidly approach the holiday period it will be very interesting to see if there is a November rally or if the year will end quietly.
“With the surprise announcement that stamp duty on buy-to-let properties is increasing by 3% we may see landlords accelerate plans to beat the April deadline.”
