# Contract Variation- Contract Extension

> A sourced UK public-sector contract award published by Defence Science and Technology Laboratory.

## Key facts

- Public buyer: [Defence Science and Technology Laboratory](/buyers/defence-science-and-technology-laboratory/contract-awards)
- Contract winner: [Calder Conferences Limited](/contract-winners/calder-conferences/public-sector-contract-awards)
- Award value: £1,100,000
- Tender value: £1,100,000
- Award date: 16 January 2025
- Published: 29 January 2025
- Contract start: 26 February 2025
- Contract end: 25 February 2026
- Stage: awarded
- Procurement category: services
- Notice ID: f2226929-80d7-485d-b6ac-cd025fd6a8e0-821403
- OCID: ocds-b5fd17-4fe28935-6f02-432e-b45e-52945d85770b

## Description

Contract Variation to extend current provision by 12 months\.

## Related contract awards

- [SDA Capability Map 2026 update](/contracts/ocds-b5fd17-6f95c0d4-bef3-485a-b9c5-1dff958f5895): Defence Science and Technology Laboratory
- [Forward Asset Service Plan \(FASP01\)](/contracts/ocds-b5fd17-99492d33-8ddb-4665-84a8-7883fb4c9293): Defence Science and Technology Laboratory
- [Insurance Purchase](/contracts/ocds-b5fd17-f0b22c6d-a6ed-4807-b3b3-99060b648091): Defence Science and Technology Laboratory
- [CSP26014 - Acas27454 - Venue Hire](/contracts/ocds-b5fd17-494d4f31-977e-4fed-b400-18a32e035792): UK SBS
- [Venue Booking Services \(2026-2030\)](/contracts/ocds-b5fd17-ea694946-e9de-4d81-921e-d5655e353c16): DWP
- [Provision of Corporate Contact Venue Hire](/contracts/ocds-b5fd17-65985ad1-2da7-4e4b-829d-ad47f5b276ea): Crown Commercial Service

## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/f2226929-80d7-485d-b6ac-cd025fd6a8e0-821403)