---
title: "Calliope"
ocid: "ocds-h6vhtk-05f677"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f677"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f677.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f677.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "UK ATOMIC ENERGY AUTHORITY"
published: "2025-12-17"
---

# Calliope

Buyer: UK ATOMIC ENERGY AUTHORITY  
Current stage: Planning  
OCID: ocds-h6vhtk-05f677

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[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05f677.json)

## Summary

The procurement process, titled "Calliope" and initiated by the UK Atomic Energy Authority, involves the development and verification of tritium accountancy methods for the THALIA project. This procurement falls under the services category, specifically targeting research laboratory services and development consultancy services. The procurement is at the planning stage, with key milestones including scheduled market engagement due by 15 January 2026. Located in Oxfordshire, UK, this process has set its communication deadlines for 9 March 2026, and the contract duration spans from 10 March 2026 to 25 May 2026, offering a budget of £120,000. 

This tender presents valuable opportunities for businesses specialising in research and experimental development. It is particularly well-suited to small and medium-sized enterprises (SMEs) and voluntary, community, and social enterprises (VCSEs), given the suitability criteria. Businesses adept in providing consultancy services and innovative research facilities will find this offering aligns well with their growth strategies. The UK Atomic Energy Authority, operating from the Culham Science Centre, offers a central governmental platform for businesses to contribute meaningfully to advancements in tritium accountancy, ensuring a collaborative approach to future scientific processes.

## Notice

CALLIOPE is a specific work package related to preparation and tritium accountancy of samples for the THALIA project. As a part of CALLIOPE, it is required to develop and verify a new tritium accountancy method in FLiBe in addition to already established methods. This will assist in comparison of different methods against each other and validation of tritium accountancy for future processes.

### Planning Information

https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=100971&TID=100106216&B=

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/083640-2025 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 17 Dec 2025 |
| Submission deadline | Not specified |
| Future notice date | 9 Mar 2026 |
| Award date | Not specified |
| Contract period | 10 Mar 2026 - 25 May 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £100,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Planning |
| Lots status | Planning |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UK ATOMIC ENERGY AUTHORITY |
| Locality | OXFORDSHIRE |
| Post town | Oxford |
| Postcode | OX14 3DB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ14 Oxfordshire CC |
| Local authority | South Oxfordshire |
| Electoral ward | Sandford & the Wittenhams |
| Westminster constituency | Didcot and Wantage |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 73 - Research and development services and related consultancy services

### Codes

- 73111000 - Research laboratory services
- 73120000 - Experimental development services
- 73210000 - Research consultancy services
- 73220000 - Development consultancy services

## Release History

- 17 Dec 2025 at 09:59 - PlanningUpdate - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/083640-2025
- 16 Dec 2025 at 11:00 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/083239-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/083640-2025
  17th December 2025 - Preliminary market engagement notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/083239-2025
  16th December 2025 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=100971&TID=100106216&B=
- https://www.gov.uk/government/organisations/uk-atomic-energy-authority
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f677. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05f677.json.