Jurisdiction(s):
United Kingdom

Key definition

United Kingdom Continental Shelf definition

What does United Kingdom Continental Shelf mean? In practice, “United Kingdom Continental Shelf” (UKCS) describes the offshore seabed and subsoil areas around the UK where the UK exercises sovereign rights to explore for and exploit oil, gas and certain other non‑living natural resources. It does not cover the water column or airspace. The concept derives from international law (UNCLOS) and is given effect in UK legislation, principally the Continental Shelf Act 1964 and Orders in Council designating areas, with extensive use across sectoral statutes (including the Petroleum Act 1998 and Energy Acts). The UKCS includes major provinces in the North Sea, West of Shetland/Atlantic Margin, the Irish Sea,...

UKCS offshore petroleum pipelines and terminals: contractual framework for shippers and transporters from pre-tie-in to post-transport

Published by a LexisNexis Energy expert

Practice notes

Pipeline Transportation on the United Kingdom Continental Shelf (UKCS)

On the United Kingdom Continental Shelf (UKCS), pipeline transport is delivered via a number of major lines, each owned and run by independent joint ventures (see Practice Note: Transportation—transportation pipelines and terminals in the UKCS). Consequently, every network applies its own commercial terms and contractual framework. As such, each system maintains distinct commercial and contractual features. This note provides a high-level outline of the principal agreements a petroleum Shipper may need to put in place, together with some of the Transporter’s key contractual arrangements.

Pre-transportation contracts

Before a Transportation Agreement is concluded, a Shipper might enter into some or all of the following, depending on the circumstances:

Confidentiality Agreement — covering discussions between the Shipper and Transporter, including any indicative terms and/or Heads of Terms agreed between the parties
Study Agreements — providing for the initial study to tie-in the Shipper’s field to the pipeline
Front end Engineering Agreements (FEED Agreements) — used for preliminary engineering for the tie-in; larger operators often undertake this in-house
Design Contract — to determine the design that will be used for the construction and tie-in of the field

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Web page updated on 22/05/2026

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