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TerminatedUnited KingdomGoods£2,000,000Add to pipeline

Provision of Lead for Fixed Ballast, RRS Sir David Attenborough

Awarded to Calder Industrial Materials Ltd

UK Research & Innovation (UKRI)(buyer)

Published
Published 22 October 2025
Deadline
Closed 17 November 2025

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Overview

UK Research & Innovation procured 477 tonnes of lead ballast for the RRS Sir David Attenborough research vessel to correct the ship's weight distribution toward the bow. The lead blocks, to be installed in the aft peak ballast tank with protective measures against noise and vibration transmission, was awarded to Calder Industrial Materials Ltd for £1,933,519 on 18 November 2025.

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Key details

Country
United Kingdom
Status
Terminated
Category
Goods
Estimated value
£2,000,000
Procedure
Open procedure
Rules
Procurement Act 2023
SME suitable
Yes
Published
22 October 2025
Questions by
3 November 2025
Deadline
Closed
Classification (CPV)
Lead

Award outcome

Awarded value
£1,933,519
Award date
18 November 2025
Contract period
16 December 2025 → 30 September 2026
Contract length
9 months
Against estimate
3% below
Bids received
1
Winner
  • Calder Industrial Materials Ltd

This contract ended on 30 September 2026.

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About the winner

Calder Industrial Materials Ltd

Based in
Chester
Public contracts won
5
Across UK and EU notices

No other contract from UK Research & Innovation (UKRI) under this supplier name in Skim's records.

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Competition and scoring

Bids received

1

1 from SMEs

Open and restricted tenders in Mining, basic metals and related products drew a median of 3 bids over the last 24 months; 29% received only one.

How bids were scored

Price 80% · Quality 20%

  • Price80%
  • Technical and Quality20%

Price and cost criteria in black, quality in blue.

Market context

Typical award in Mining, basic metals and related products

£150,900

Median of 181 awards in the last 24 months

This award is 12.8× the median.

UK Research & Innovation (UKRI) in the last 12 months

1,718

contracts awarded, worth £253,144,039 in total

See their procurement profile →

Notice history

Every published notice in this contracting process, newest first.

  1. Contract Termination

    20 October 2026

  2. Contract

    17 December 2025

  3. Contract

    20 November 2025

  4. Contract Notice

    22 October 2025

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