New UK Trader Support Service (TSS) platform now live

26 Oct 2026

On 20 October 2026, the UK Trader Support Service (TSS) officially moved to a new platform with a new service provider. As a result, all Great Britain and Northern Ireland goods movements from this date onwards must now be submitted on the new platform.

HMRC has confirmed that customs processes and businesses' legal obligations stay the same. Only the platform and the way you access it have changed.

The previous TSS closes completely on 30 November 2026

The previous TSS no longer accepts new movements, but until 30 November 2026, you can use it for two specific things only:

• Closing outstanding Supplementary Declarations. A declaration isn't complete until it shows as ‘Closed’. Check each open declaration now and resolve whatever is stopping it from closing.
• Downloading your data. Save any declaration records you need. You can also get historical data through HMRC's Trade Reporting and Extracting (TRE) service.

You won't be able to access the previous TSS after 30 November, so we encourage action as soon as possible.

If you haven't finished moving to the new platform yet, check that you're fully enrolled. Make sure your company profile, users, authorisations (such as UKIMS), and agent relationships are correct. Get the latest news and information on the switchover via HMRC and NICTA.

Explore your options with Maersk Customs Services

Maersk Customs Services (MCS) can help you:

• Understand what the TSS changes mean for your GB–NI flows
• Compare alternatives to TSS and find the set-up that works best for your supply chain
• Prepare for the changes coming in the UK and EU in 2027

To talk through your options, contact your local Maersk representative or please reach out to the MCS team directly here.

Our team of experts remain on hand to support with all matters pertaining to your supply chain and indeed customs operations.