UNC transitional documents General Transitional Documents Offtake Arrangements Document Transportation Principal Document European Interconnection Document Independent Gas Transporter Arrangements Document Code Updates Printer friendly version Related Files File 10 August 2026 Transition Document (Consolidated, printable version) File 18 May 2026 TD Table of Contents File 29 March 2023 TDI - General File 13 April 2023 TDIIA - General File 29 March 2023 TDIIB - New Transporter File 10 August 2026 TDIIC - Transitional Rules File 29 March 2023 TDIID - Flexibility Bidding File 10 August 2026 TDIIE - Re-Allocation of NTS Entry Capacity at Bacton ASEP File 08 March 2024 TDIIF - Nexus Implementation File 29 March 2023 TDIIG - Transitional Invoicing File 13 April 2022 TDIIH - CSS Implementation File 11 June 2025 TDIII - Offtake Arrangements Document (inc. Part IV - Modification Rules) File 29 March 2023 TDIV - Modification Rules File 29 March 2023 TDV - European Interconnection Document File 29 March 2023 TDVI - COVID-19 - Temporary Measures File 18 May 2026 TDVII – H100 Fife Hydrogen Project Rules Download All Files