Maintenance window details
Cloudflare, a provider of web security and content delivery services, has scheduled maintenance for its London (LHR) data centre. The work is set to take place on 6 November 2026, between 02:00 and 05:00 UTC.
During this three-hour window, engineers will be performing updates to the infrastructure in the London hub. As this is one of the primary points of presence for UK internet traffic, Cloudflare will be rerouting data to alternative data centres to maintain service availability.
Potential for increased latency
For most UK-based small and medium businesses, the main effect will be a slight increase in latency. Latency is the time it takes for data to travel from a server to an end-user's device. Because traffic is being diverted away from London to other locations—likely in mainland Europe—users may notice that websites or cloud applications respond slightly slower than usual.
This is generally not an outage, but rather a redirection of traffic. For standard web traffic, no manual intervention is required.
Impact on direct connections
Cloudflare has noted that customers using Private Network Interconnects (PNI) or Cloudview Network Interconnects (CNI) may experience temporary unavailability of network interfaces. These are dedicated physical or virtual connections used by larger organisations to link their private networks directly to Cloudflare's infrastructure.
If your business relies on these specific types of direct connections at the London site, you should verify that your network hardware is set to automatically fail over to a different data centre. If failover is not configured, those specific links may stop working for the duration of the maintenance.
Recommended actions
Since the work is scheduled for the early hours of a Friday morning, the impact on standard business operations is expected to be minimal. However, we recommend that businesses running time-sensitive automated tasks or those with 24-hour operations monitor their site performance during this window.
We do not currently have information on the specific nature of the hardware or software being updated, as Cloudflare has not disclosed these details in their status report.