The statistics from analyst SPSL, show an improved result on the 1.1 per cent year-on-year drop in Q2.
Monthly figures for september returned to a decline of 0.9 per cent on September 2007.
The drop follows a one-month rally in August, when figures rose by 0.1 per cent and show a rather more stark 11 per cent seasonal decline on August’s retail footfall.
SPSL’s retail psychologist, Dr Tim Denison said: “Despite so much downbeat news around, the weakness in the economy currently lies more with the corporate sector - in the financial markets, banking and inflationary pressures in particular - than with any over-arching failing of the consumer.
“The RTI has held up remarkably well so far this year, showing that shoppers are nevertheless still pounding the pavements. The fact is that there are still many shoppers out on the high street, representing potential sales opportunities for everyone, particularly those with the most tempting offers.
“Consequently, I anticipate seeing much more creativity this year in the ways in which retailers attract custom. In contrast to this year’s tortuous summer when shop windows were awash with Sales signs for months, I expect that retailers will deliver Christmas campaigns that will be less formulaic and more individually conceived around each brand’s precise shopper insight.”