S&S GB (Safety & Security Great Britain) or SSGB is the Entry Summary Declaration (ENS) service for goods imported into Great Britain from the EU and RoW. This will be a requirement from October 2024.
A Safety and Security Declaration (also known as a SSD) is used by GB border authorities to analyse the potential risk caused to their territory by goods crossing their border. It is not included in your other duty and tax obligations.
Similar to existing GB to EU ENS requirements, for S&S GB declarations you will need to submit the following to ensure you can board ferries and LeShuttle (Eurotunnel) Freight trains -
It is highly likely that GB border control will be strictly enforcing these requirements. Anybody not providing the correct declaration will not be able to travel and/or face penalties.
More information is available in the UK Government - The Border Target Operating Model: August 2023