The UK Government Digital Service (GDS) has opened procurement for the renewal of GOV.UK Notify's core supplier contracts, with a budget ceiling of £200 million. The platform currently delivers over one billion messages to citizens each year, making it critical infrastructure for public sector communications. The tender process will determine whether the government stays with existing vendors or brings in new providers to handle authentication, infrastructure, and delivery services. The outcome will reshape the government's digital communications architecture and supplier relationships.