Virgin Media has consolidated its lead at the top of Broadband.co.uk's speed table for the month of November.
The provider has widened the gap between itself and its nearest competitor, now boasting an average download speed of 6.33Mb.
Meanwhile, Orange were rock bottom of the broadband speed league, registering a "shocking" average of only 1.15Mb.
Commenting on the data, Broadband.co.uk's Edd Dawson said Orange's figures were "the worst set of speedtest results we've ever recorded for a broadband provider".
He went on: "Orange are clearly seeing network congestion at peak times, as at off peak times they compare favourably with other suppliers, it is at the peak evening times that their speeds collapse to an average of only 0.675Mb."
It was found that apart from Virgin Media, most providers saw their average download speed drop in November, continuing the trend of previous months.