Notice history

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

May 2025

Jun 2025

Jul 2025

Jul 2025

Identified
July 29, 2025 at 2:42 PM
Identified
July 29, 2025 at 2:42 PM
As of now, restoration efforts are actively progressing. Major Incident Management remains closely engaged and is working in collaboration with support teams to coordinate a comprehensive resolution to the issue. Further updates will be shared as progress continues. Current Impact There is no total outage at this time. However, customers may be experiencing severe latency and reduced service performance
Investigating
July 29, 2025 at 9:08 AM
Investigating
July 29, 2025 at 9:08 AM
We are aware of an ongoing incident affecting a number of services. Our Engineers are conducting preliminary investigations to determine the comprehensive Service Impact Analysis. We apologise for the inconvenience caused. Our main priority is to deliver the levels of service that our customers deserve and as such we have invoked our Major Incident Process. CityFibre are working to affect a full restoration as soon as possible. We will continue to issue regular updates until all services have been restored.

CityFibre Planned Maintenance - 24/07/2025 - 00:01 - 06:00

Completed
July 24, 2025 at 5:01 AM
Completed
July 24, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
July 23, 2025 at 11:01 PM
In progress
July 23, 2025 at 11:01 PM
Maintenance is now in progress
Planned
July 23, 2025 at 11:01 PM
Planned
July 23, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.

The maintenance details and the impact on your service(s) are:
What we are doing:
Network Maintenance
Customers will experience an outage during the maintenance window.
24/07/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

CityFibre Planned Maintenance - 23/07/2025 - 00:01 - 06:00

Completed
July 23, 2025 at 5:01 AM
Completed
July 23, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
July 22, 2025 at 11:01 PM
In progress
July 22, 2025 at 11:01 PM
Maintenance is now in progress
Planned
July 22, 2025 at 11:01 PM
Planned
July 22, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.
Location:
Great Yarmouth
The maintenance details and the impact on your service(s) are:
What we are doing:
Network Maintenance
Customers will experience a 30-minute outage during the maintenance window.
23/07/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

CityFibre Planned Maintenance - 22/07/2025 - 00:01 - 06:00

Update
July 22, 2025 at 5:01 AM
Completed
July 22, 2025 at 5:01 AM
Maintenance has completed successfully
Update
July 22, 2025 at 5:01 AM
Completed
July 22, 2025 at 5:01 AM
Maintenance has completed successfully
Update
July 22, 2025 at 5:01 AM
Completed
July 22, 2025 at 5:01 AM
Maintenance has completed successfully
Update
July 22, 2025 at 5:01 AM
Completed
July 22, 2025 at 5:01 AM
Maintenance has completed successfully
Completed
July 22, 2025 at 5:01 AM
Completed
July 22, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
July 21, 2025 at 11:01 PM
In progress
July 21, 2025 at 11:01 PM
Maintenance is now in progress
Planned
July 21, 2025 at 11:01 PM
Planned
July 21, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.

The maintenance details and the impact on your service(s) are:
What we are doing:
Network Maintenance
Customers will experience an outage during the maintenance window.
22/07/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

CityFibre Planned Maintenance - 21/07/2025 - 00:01 - 06:00

Completed
July 21, 2025 at 5:01 AM
Completed
July 21, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
July 20, 2025 at 11:01 PM
In progress
July 20, 2025 at 11:01 PM
Maintenance is now in progress
Planned
July 20, 2025 at 11:01 PM
Planned
July 20, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.
Location:
Sheffield
The maintenance details and the impact on your service(s) are:
What we are doing:
Network Maintenance
Customers will experience a 30-minute outage during the maintenance window.
21/07/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

Jun 2025

CityFibre Planned Maintenance - 01/07/2025 - 00:01 - 06:00

Completed
July 01, 2025 at 5:01 AM
Completed
July 01, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
June 30, 2025 at 11:01 PM
In progress
June 30, 2025 at 11:01 PM
Maintenance is now in progress
Planned
June 30, 2025 at 11:01 PM
Planned
June 30, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.
Location:
North Tyneside
Portsmouth
Sheffield
Horsham
Bath
Brighton & Hove
The maintenance details and the impact on your service(s) are:
What we are doing:
OLT Patching
Customers will experience a 30-minute outage during the maintenance window.
01/07/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

Resolved
July 01, 2025 at 12:14 AM
Resolved
July 01, 2025 at 12:14 AM
Update:
CityFibre is pleased to confirm that the issue was successfully resolved at 01:14 on 01/07/2025. The issue was resolved by reloading the configuration, restoring full-service functionality.
Update
June 30, 2025 at 4:38 PM
Update
June 30, 2025 at 4:38 PM
Update No: 3 Incident Start Time: 14:00 30/06/2025 Summary Update: The Major Incident Team has received an ETA for ERS and FLM of 18:45 and 18:40 respectively. In the meantime, the vendor responsible for the active equipment are continuing to investigate the hardware. The Major Incident Team continues to closely monitor the situation and will ensure that all necessary actions are taken to achieve a full resolution.
Update
June 30, 2025 at 3:54 PM
Update
June 30, 2025 at 3:54 PM
Update No: 2 Incident Start Time: 14:00 30/06/2025 Summary Update: The Major Incident Team has dispatched both FLM and ERS engineers to the site to investigate the root cause of the incident. We are currently awaiting ETA updates for both teams. In parallel, we have raised an incident with the vendor responsible for the active equipment to assess any potential faults within the hardware or software. The Major Incident Team continues to closely monitor the situation and will ensure that all necessary actions are taken to achieve a full resolution.
Monitoring
June 30, 2025 at 3:00 PM
Monitoring
June 30, 2025 at 3:00 PM
Update: Incident Start Time: 14:00 30/06/2025 Summary Update: The Major Incident Team are currently investigating an incident that is impacting affecting 5000+ national FTTH and FTTP business customers. We are working to identify the issue and resolve the issue as quickly as possible. Next update at: 16:30
Identified
June 30, 2025 at 2:27 PM
Identified
June 30, 2025 at 2:27 PM
Major Incident - Core link down between London (LON5) and Slough (SLO664)
Update:
We are aware of an ongoing incident affecting a number of services. Our Engineers are conducting preliminary investigations to determine the comprehensive Service Impact Analysis. We apologise for the inconvenience caused. Our main priority is to deliver the levels of service that our customers deserve and as such we have invoked our Major Incident Process. CityFibre are working to affect a full restoration as soon as possible. We will continue to issue regular updates until all services have been restored.

CityFibre Planned Maintenance - 30/06/2025 - 00:01 - 06:00

Completed
June 30, 2025 at 5:01 AM
Completed
June 30, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
June 29, 2025 at 11:01 PM
In progress
June 29, 2025 at 11:01 PM
Maintenance is now in progress
Planned
June 29, 2025 at 11:01 PM
Planned
June 29, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.
Location:
Halifax
Hinckley
North Tyneside
Norwich
The maintenance details and the impact on your service(s) are:
What we are doing:
Configuration Migration
Customers will experience a 30-minute outage during the maintenance window.
30/06/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

CityFibre Planned Maintenance - 27/06/2025 - 00:01 - 06:00

Completed
June 27, 2025 at 5:01 AM
Completed
June 27, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
June 26, 2025 at 11:01 PM
In progress
June 26, 2025 at 11:01 PM
Maintenance is now in progress
Planned
June 26, 2025 at 11:01 PM
Planned
June 26, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.
Location:
High Wycombe
Newark on Trent
Edinburgh
Nottingham
Glasgow
Portsmouth
Sheffield
Sunderland
The maintenance details and the impact on your service(s) are:
What we are doing:
Router Configuration.
Customers will experience a 30-minute outage during the maintenance window.
27/06/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

CityFibre Planned Maintenance - 26/06/2025 - 00:01 - 06:00

Completed
June 26, 2025 at 5:01 AM
Completed
June 26, 2025 at 5:01 AM
Maintenance has completed successfully
In progress
June 25, 2025 at 11:01 PM
In progress
June 25, 2025 at 11:01 PM
Maintenance is now in progress
Planned
June 25, 2025 at 11:01 PM
Planned
June 25, 2025 at 11:01 PM
Dear Customer,

We are conducting planned maintenance on our network.

The maintenance details and the impact on your service(s) are:
Location:
Blackpool
Bath
Lincoln
Barnsley
Havant
Northampton
Sheffield
Customers will experience a 30-minute outage during the maintenance window.
26/06/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

May 2025

CityFibre Planned Maintenance - 21/05/2025 - 00:01 - 06:00

Completed
May 21, 2025 at 5:01 AM
Completed
May 21, 2025 at 5:01 AM
Maintenance has completed successfully
Update
May 20, 2025 at 11:06 PM
In progress
May 20, 2025 at 11:06 PM
Areas affected:
1. Kettering
2. Rothwell
3. Leicester
Update
May 20, 2025 at 11:01 PM
In progress
May 20, 2025 at 11:01 PM
Maintenance is now in progress
In progress
May 20, 2025 at 11:01 PM
In progress
May 20, 2025 at 11:01 PM
Dear Customer,

Cityfibre is conducting planned maintenance on their network.

The maintenance details and the impact on your service(s) are:
What we are doing:

Software Migration
Customers will experience an outage during the maintenance window.
21/05/2025 - 00:01 - 06:00
We always do our best to complete maintenance work quickly and with as little disruption as possible.
Apologies for any inconvenience it may cause.

Resolved
May 14, 2025 at 8:29 AM
Resolved
May 14, 2025 at 8:29 AM
CityFibre is pleased to confirm that the issue was resolved at 21:46 May 13, 2025
Monitoring
May 13, 2025 at 7:26 PM
Monitoring
May 13, 2025 at 7:26 PM
Cityfibre: Following the successful transition of one of the three core fibre links into the newly installed joint, we can confirm that all services associated with this link have now been fully restored. Our on-site teams are now progressing with the restoration of the remaining two core links to bring all other affected services back online. Further updates will be provided as work continues.
Identified
May 13, 2025 at 5:30 PM
Identified
May 13, 2025 at 5:30 PM
13th May 2025 18:11
Major Incident Management has confirmed that one of the three core links has now been successfully cut, and work is actively underway to transition it into the newly installed joint. Once the fibre has been fully spliced and integrated, a confirmation of service restoration for affected traffic on this link will be provided at 20:00. Further updates will follow as progress continues on the remaining links.

Resolved
May 13, 2025 at 12:00 PM
Resolved
May 13, 2025 at 12:00 PM
This incident has been resolved.
Investigating
May 13, 2025 at 10:45 AM
Investigating
May 13, 2025 at 10:45 AM
Incident Start Time: 10:41 13/05/2025
Summary Update:
The Major Incident Team are currently investigating an incident that is causing significant service degradation and loss of service across the west and north of Scotland. We are working to identify the issue and resolve the issue as quickly as possible. Completed Actions:
• CityFibre NOC engaged
• CityFibre Network Engineering Engaged
• Major Incident Process Invoked

MS3 EMERGENCY MAINTENANCE - DN31 -

Completed
May 17, 2025 at 7:22 AM
Completed
May 17, 2025 at 7:22 AM
Maintenance has completed successfully.
Planned
May 13, 2025 at 10:00 AM
Planned
May 13, 2025 at 10:00 AM
Date and time (from and to) of Change:
*13/05 FROM 11:00 TO 18:00*
Dear Customer,
MS3 are performing emergency maintenance, to replace equipment in the DN31 area with the affected streets listed below.
ALEXANDRA ROAD
FREDERICK STREET
RAVENSPURN WAY
SOUTH PARADE
TENNYSON MEWS
TENNYSON STREET
WHARFEDALE WAY

Resolved
May 04, 2025 at 4:19 PM
Resolved
May 04, 2025 at 4:19 PM
CityFibre is pleased to inform you that the issue was resolved at 15:13 on 04/05/2025. The outage was caused by cabling issues within a third-party network. Thank you for your patience during this time. CityFibre aims to provide the full Major Incident Report within 10 working days of the incident being resolved.
Update
May 04, 2025 at 11:19 AM
Update
May 04, 2025 at 11:19 AM
Cityfibre teams are working to restore services as quickly as possible.
Next update: 15:00, 04/05/2025
Identified
May 04, 2025 at 8:59 AM
Identified
May 04, 2025 at 8:59 AM
Incident Start Time: 00:57, 04/05/2025

Cityfibre teams are working urgently to identify the cause and restore services as quickly as possible. CityFibre field engineers and third-party engineers are on site and have carried out OTDR (Optical Time-Domain Reflectometer) tests. These tests help determine how far network traffic can travel along the fibre before it fails, which in turn indicates the location of a fibre break. Initial results from CityFibre indicate that the fault lies within one of our third-party networks. We are now working closely with our third-party provider to confirm this and pinpoint the exact location of the break. Next Update: 13:00, 04/05/2025

May 2025 to Jul 2025

OCTAPLUSUK - Notice history

System Under Maintenance

Notice history

Jul 2025

Jun 2025

May 2025