UK Top 40

The Keynote UK Business 40 Internet Performance Index (UK40) measures the average download time for the home pages of 40 important UK-based business Web sites

How it Works!
These measurements are taken by automated agents attached to key points of the Internet backbone in the United Kingdom.

The public Index uses measurements taken Monday through Sunday. Keynote subscribers receive UK40 measurements and measurement components such as DNS lookup time and TCP connect round-trip time. Subscribers can also investigate UK40 performance based on city, backbone, or agent.

The UK40 is measured by Keynote's commercially available Application Perspective Web performance measurement product. This software-as-a-service product measures download speed for well-connected major business users (T-1 to T-3 connection speeds) and ISP peering performance. To ensure that any difficulties in downloads are not due to congestion, our nationwide test & measurement network keeps its connections to the Internet lightly loaded.

Measured performance depends on factors such as geographic location, backbone connectivity, and network infrastructure at each measurement location. The performance experienced by an individual user in one of the locations may be better or worse than our measured average. It depends on how users are connected to their ISP and how the ISP connects to the Internet.