---
title: "Contract Variation- Contract Extension"
ocid: "ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "DEFENCE SCIENCE AND TECHNOLOGY LABORATORY"
published: "2025-01-29"
---

# Contract Variation- Contract Extension

Buyer: DEFENCE SCIENCE AND TECHNOLOGY LABORATORY  
Current stage: Award  
OCID: ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b.json)

## Summary

The Defence Science and Technology Laboratory, located in Salisbury, England, is executing a contract extension of their existing provision by 12 months under the title "Contract Variation- Contract Extension." This procurement focuses on seminar organisation services within the event services industry. The procurement process, currently in the award stage, employs a selective method through a call-off from a framework agreement. The extended contract is valued at £1,100,000 and will run from 26th February 2025 to 25th February 2026. The tender period concluded on 25th February 2025.

This extension offers significant opportunities for businesses specialising in event and seminar organisation to expand their operations and secure a substantial government contract. Especially well-suited for small and medium enterprises (SMEs), this contract enables businesses to partner with a reputable government body, Defence Science and Technology Laboratory, and gain a foothold in the public sector market. Calder Conferences Limited, a large-scale event services provider, has been awarded the contract, ensuring a high-quality delivery of services.

## Notice

Contract Variation to extend current provision by 12 months.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/f2226929-80d7-485d-b6ac-cd025fd6a8e0 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 29 Jan 2025 |
| Submission deadline | 25 Feb 2025 |
| Future notice date | Not specified |
| Award date | 16 Jan 2025 |
| Contract period | 26 Feb 2025 - 25 Feb 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,100,000 |
| Lots value | Not specified |
| Awards value | £1,100,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Not specified |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | DEFENCE SCIENCE AND TECHNOLOGY LABORATORY |
| Locality | SALISBURY |
| Post town | Salisbury |
| Postcode | SP4 0JQ |
| Country | England |
| ITL 1 | TLK South West (England) |
| ITL 2 | TLK7 Gloucestershire and Wiltshire |
| ITL 3 | TLK72 Wiltshire |
| Local authority | Wiltshire |
| Electoral ward | Winterslow & Upper Bourne Valley |
| Westminster constituency | Salisbury |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | CALDER CONFERENCES |

## CPV Codes

### Divisions

- 79 - Business services: law, marketing, consulting, recruitment, printing and security

### Codes

- 79951000 - Seminar organisation services
- 79952000 - Event services

## Release History

- 29 Jan 2025 at 14:01 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/f2226929-80d7-485d-b6ac-cd025fd6a8e0

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/f2226929-80d7-485d-b6ac-cd025fd6a8e0
  29th January 2025 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/SupplierAttachment/766e285a-aef6-45f8-a58e-86e2ffcab70d

## 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-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b.json.