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Marine Consultancy Framework — NATIONAL GRID UK LIMITED | UKGovscan
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AWARDEDProcurement notice · NATIONAL GRID UK LIMITEDRef ocds-h6vhtk-042bf0
Marine Consultancy Framework
Save Track Track buyer
Contract Value
£45,000,000
Suppliers
16
6 ALPHA ASSOCIATES LIMITED · ABP MARINE ENVIRONMENTAL RESEARCH LIMITED +14 more
Procurement
Negotiated procedure with prior call for competition
National Grid is an international Electricity and Gas Network Company based in the UK with operations in north-eastern US, and one of the largest investor-owned energy companies in the world.
National Grid are looking to set up a multi-year Marine Consultancy Framework to service offshore cable laying as part of the Great Grid Upgrade.
The Framework will cover the full gamut of consultancy disciplines required to support end to end marine projects. Including Subsea Cable Technical Consultancy, Unexploded Ordinance (UXO ALARP), Metocean, Marine Survey Support and HVDC/HVAC Platform Engineering Services.
The Framework will be developed in line with National Grid processes, other best practice guidance i.e. DNVGL-RP-0360 and European Subsea Cables Association guidelines.
Data note: the source feed marks these lots as cancelled even though their awards are active — an inconsistency in the published notice. The award status is shown above.
Award criteria
Weightings from the notice, applied to every lot.
Technical40%
Commercial60%(price)
Government spending data: These suppliers have received £3,290,706,105 in 29,955 payments (over £25k) from Department for Transport, Department of Health and Social Care, DEFRA, Department for Education, Ministry of Defence and 37 more public bodies (2010-04-20 to 2026-07-08).
Key Dates
Published
3 December 2025
Tender Open
-
Tender Deadline
13 February 2024
Award Date
-
Contract Signed
24 June 2025
Contract Start
-
Contract End
-
Extension option
Plus 2 years plus 1 year
Notice Amendments
Changes the buyer published to this notice after it first appeared.
Amendment 1
Change (II.2.14): National Grid UK Limited will conduct the procurement and enter into the framework
agreement with the successfully appointed suppliers for its own benefit and for the benefit
of the entities identified below.
National Grid UK Limited or any of the following entities shall be entitled to call off from the
framework agreement and enter into contracts resulting from the call off:
1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162
Companies Act 2006 except that references in that section to "majority" shall be replaced
by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings
of any such parent undertakings at the time of the call off including without limitation:
a) National Grid Electricity Transmission Plc
b) National Grid LionLink Limited
c) National Grid Nautilus Limited
d) National Grid Continental Limited
e) National Grid Interconnector Holdings Limited
f) National Grid Interconnectors Limited
g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited
i) National Grid IFA 2 Limited
j) National Grid NSN Link Limited
2. Any entity that is acting as a project partner with any National Grid call off partner
(identified in paragraph 1 above) and which calls off jointly with any such National Grid entity
including, without limitation,:
a) Scottish Hydro Electric Transmission Plc
b) TenneT TSO B.V.
Page 7 to 24
c) TenneT TSO GmbH
d) TenneT Offshore GmbH
e) Elia Asset NV/SA
f) Energinet Eltransmission A/S
g) Statnett SF
h) Transmission system operators and other developers and/or operators of HVDC projects;
and/or
3. Any special purpose vehicle, incorporated joint venture or contractual joint venture,
between any of the parties identified in paragraphs 1 and 2 above.
It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its
subsidiaries whether current or future, which hold an interconnector licence, and National
Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework
agreement, and therefore entitled to call off under it, these entities are not subject to the
Utilities Contracts Regulations 2016 or any other relevant procurement regime. These
entities' participation in this procurement process and/or the framework agreement does
not cause them to be subject to those rules in whole or in part. → National Grid UK Limited will conduct the procurement and enter into the framework
agreement with the successfully appointed suppliers for its own benefit and for the benefit
of the entities identified below.
National Grid UK Limited or any of the following entities shall be entitled to call off from the
framework agreement and enter into contracts resulting from the call off:
1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162
Companies Act 2006 except that references in that section to "majority" shall be replaced
by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings
of any such parent undertakings at the time of the call off including without limitation:
a) National Grid Electricity Transmission Plc
b) National Grid LionLink Limited
c) National Grid Nautilus Limited
d) National Grid Continental Limited
e) National Grid Interconnector Holdings Limited
f) National Grid Interconnectors Limited
g) National Grid North Sea Link Limitedh) National Grid Viking Link Limited
i) National Grid IFA 2 Limited
j) National Grid NSN Link Limited
k) NGET/SPT Upgrades Limited
l) Eastern Green Link 1 Limited
2. Any entity that is acting as a project partner with any National Grid call off partner
(identified in paragraph 1 above) and which calls off jointly with any such National Grid entity
including, without limitation,:
a) Scottish Hydro Electric Transmission Plc
b) TenneT TSO B.V.
c) TenneT TSO GmbH
d) TenneT Offshore GmbH
e) Elia Asset NV/SA
f) Energinet Eltransmission A/S
g) Statnett SF
h) SPT Transmission Plc
k) Transmission system operators and other developers and/or operators of HVDC projects;
and/or
3. Any special purpose vehicle, incorporated joint venture or contractual joint venture,
between any of the parties identified in paragraphs 1 and 2 above.
It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its
subsidiaries whether current or future, which hold an interconnector licence, and National
Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework
agreement, and therefore entitled to call off under it, these entities are not subject to the
Utilities Contracts Regulations 2016 or any other relevant procurement regime. These
entities' participation in this procurement process and/or the framework agreement does
not cause them to be subject to those rules in whole or in part.
Amendment 2
Change (II.2.14): National Grid UK Limited will conduct the procurement and enter into the framework
agreement with the successfully appointed suppliers for its own benefit and for the benefit
of the entities identified below.
National Grid UK Limited or any of the following entities shall be entitled to call off from the
framework agreement and enter into contracts resulting from the call off:
1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162
Companies Act 2006 except that references in that section to "majority" shall be replaced
by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings
of any such parent undertakings at the time of the call off including without limitation:
a) National Grid Electricity Transmission Plc
b) National Grid LionLink Limited
Page 5 to 7
c) National Grid Nautilus Limited
d) National Grid Continental Limited
e) National Grid Interconnector Holdings Limited
f) National Grid Interconnectors Limited
g) National Grid North Sea Link Limited
h) National Grid Viking Link Limited
i) National Grid IFA 2 Limited
j) National Grid NSN Link Limited
2. Any entity that is acting as a project partner with any National Grid call off partner
(identified in paragraph 1 above) and which calls off jointly with any such National Grid entity
including, without limitation,:
a) Scottish Hydro Electric Transmission Plc
b) TenneT TSO B.V.
c) TenneT TSO GmbH
d) TenneT Offshore GmbH
e) Elia Asset NV/SA
f) Energinet Eltransmission A/S
g) Statnett SF
h) Transmission system operators and other developers and/or operators of HVDC projects;
and/or
3. Any special purpose vehicle, incorporated joint venture or contractual joint venture,
between any of the parties identified in paragraphs 1 and 2 above.
It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its
subsidiaries whether current or future, which hold an interconnector licence, and National
Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework
Page 6 to 7
agreement, and therefore entitled to call off under it, these entities are not subject to the
Utilities Contracts Regulations 2016 or any other relevant procurement regime. These
entities' participation in this procurement process and/or the framework agreement does
not cause them to be subject to those rules in whole or in part. → National Grid UK Limited will conduct the procurement and enter into the framework
agreement with the successfully appointed suppliers for its own benefit and for the benefit
of the entities identified below.
National Grid UK Limited or any of the following entities shall be entitled to call off from the
framework agreement and enter into contracts resulting from the call off:
1. Any parent undertakings or subsidiary undertakings (each term as defined in section 1162
Companies Act 2006 except that references in that section to "majority" shall be replaced
by reference to "25% or more") of National Grid UK Limited and any subsidiary undertakings
of any such parent undertakings at the time of the call off including without limitation:
a) National Grid Electricity Transmission Plc
b) National Grid LionLink Limited
c) National Grid Nautilus Limited
d) National Grid Continental Limited
e) National Grid Interconnector Holdings Limited
f) National Grid Interconnectors Limited
g) National Grid North Sea Link Limited
h) National Grid Viking Link Limited
i) National Grid IFA 2 Limited
j) National Grid NSN Link Limited
Page 7 to 7
k) National Grid Electricity Distribution (South West) plc
2. Any entity that is acting as a project partner with any National Grid call off partner
(identified in paragraph 1 above) and which calls off jointly with any such National Grid entity
including, without limitation,:
a) Scottish Hydro Electric Transmission Plc
b) TenneT TSO B.V.
c) TenneT TSO GmbH
d) TenneT Offshore GmbH
e) Elia Asset NV/SA
f) Energinet Eltransmission A/S
g) Statnett SF
h) Transmission system operators and other developers and/or operators of HVDC projects;
and/or
3. Any special purpose vehicle, incorporated joint venture or contractual joint venture,
between any of the parties identified in paragraphs 1 and 2 above.
It should be noted that, whilst National Grid Interconnector Holdings Limited and any of its
subsidiaries whether current or future, which hold an interconnector licence, and National
Grid Interconnectors Limited, are included within the scope of the Marine Survey Framework
agreement, and therefore entitled to call off under it, these entities are not subject to the
Utilities Contracts Regulations 2016 or any other relevant procurement regime. These
entities' participation in this procurement process and/or the framework agreement does
not cause them to be subject to those rules in whole or in part.
Procurement Details
Method
Selective — suppliers are shortlisted first
Method Details
Negotiated procedure with prior call for competition