Planned Maintenance

The list below details any planned disruption to services to the best of our knowledge. Disruption to any of these can impact the performance of Sequoia.

This information can change at very short notice. Unless otherwise specified, all times are local.

Last change to the information on this page: Friday 05 Dec 2025 14:17

Service Start time End time Details
ASM Online Services
CCS-UK
CDS Live Service
13/12/2025 21:30 14/12/2025 06:00
Planned outage on to
See message from CDS Live Service

Due to maintenance the Customs Declaration Service (CDS) will be unavailable to all users from Saturday 13 December 9:30pm to 6:00am Sunday 14 December 2025. 

Declarations submitted during this time will be processed when the service becomes available.

Creating, updating, or embarking a goods movement reference (GMR) during this time might be affected.

Only goods with pre-lodged declarations attached to a GMR will be allowed to move using Goods Vehicle Movement Service (GVMS).


For import movements using GVMS, you should check the declaration status and arrive where needed https://www.gov.uk/guidance/manually-arrive-your-goods-in-the-uk

If moving consignments containing controlled goods with pre-lodged declarations, read the: https://www.gov.uk/guidance/list-of-goods-imported-into-great-britain-from-the-eu-that-are-controlled and attend port inspection facilities or inland border facilities for goods to be inspected and released.

Exports should have Permission to Progress (P2P) before travelling.

We apologise for any inconvenience this may cause.
CDS Test Service (TDR)
CNS Compass
ICS2
MCP Destin8
08/12/2025 21:00 08/12/2025 22:30 Planned outage on to
See message from MCP

In today’s digital landscape, system vulnerabilities are a prime target for cyberattacks, with threat actors exploiting outdated software to gain unauthorised access. To strengthen our infrastructure and safeguard critical data, we are implementing an updated security patching schedule for our servers starting December 2025.

These changes will ensure timely application of security updates, reducing exposure to potential exploits and maintaining compliance with industry best practices.

What is MCP Changing?

Given today's ever-increasing demands on business in the field of Cyber-Security, we are increasing the rate at which security updates will be applied.

As such, from 1st December 2025, we will be moving our existing change schedule and replacing it with a weekly window for security updates.

  • The current window of the third Sunday of each month will be removed.
  • The third Monday of each month at 21:00hrs GMT will be used for our infrastructure updates.
  • A weekly window of Monday at 21:00hrs GMT will be reserved, if required.
  • Updates classed as critically severe will be applied as soon as reasonably practicable.
  • These windows will only be used when necessary and advanced communication will be provided through our mailing list.

Upcoming Destin8 Downtime Windows on the 8th December 21:00 (up to 90 mins)
This our first weekly patch window used to apply the latest security patches across our services.
During this time Destin8 will be unavailable for a period of up to 90 minutes.

If you have any questions about these changes, please don’t hesitate to reach out to our helpdesk at help@mcpplc.com or through our customer portal at https://help.mcpplc.com
15/12/2025 21:00 15/12/2025 22:30 Planned outage on to
See message from MCP

In today’s digital landscape, system vulnerabilities are a prime target for cyberattacks, with threat actors exploiting outdated software to gain unauthorised access. To strengthen our infrastructure and safeguard critical data, we are implementing an updated security patching schedule for our servers starting December 2025. 
These changes will ensure timely application of security updates, reducing exposure to potential exploits and maintaining compliance with industry best practices.

What is MCP Changing?

Given today's ever-increasing demands on business in the field of Cyber-Security, we are increasing the rate at which security updates will be applied.
As such, from 1st December 2025, we will be moving our existing change schedule and replacing it with a weekly window for security updates.

  • The current window of the third Sunday of each month will be removed.
  • The third Monday of each month at 21:00hrs GMT will be used for our infrastructure updates.
  • A weekly window of Monday at 21:00hrs GMT will be reserved, if required.
  • Updates classed as critically severe will be applied as soon as reasonably practicable.
  • These windows will only be used when necessary and advanced communication will be provided through our mailing list.

This is our monthly downtime window to facilitate essential security updates to our servers. Taking place on 15th December at 21:00hrs GMT. During this time, Destin8 will be unavailable for a period of up to 90 minutes.

If you have any questions about these changes, please do not hesitate to reach out to their helpdesk at help@mcpplc.com or through their customer portal at https://help.mcpplc.com
NCTS/CTC
13/12/2025 21:45 13/12/2025 23:59 Planned outage on to
See message from HMRC
Dear members,

Due to the upcoming Customs Declaration Service (CDS) Release 5.0.0, declarations submitted into the New Computerised Transit System (NCTS) may be queued on Saturday, 13th of December 2025, between 21:45 HRS GMT until 23:59 HRS GMT.
 
NCTS will be available during this time and any declarations queued will be held and processed once the maintenance activity has concluded.

We recommend customers submit declarations prior to the downtime to avoid any delay in movements.

HMRC apologises for any inconvenience caused.

Kind regards,
Mike Thompson

On behalf of the JCCC Secretariat
Borders & Trade | Customs Policy & Strategy (CP&S)
Email: JCCC.Secretariat@hmrc.gov.uk
Joint Customs Consultative Committee (JCCC) - GOV.UK (www.gov.uk)
Pentant