---
title: "CASTLE Support and Development"
ocid: "ocds-h6vhtk-05269b"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05269b"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05269b.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05269b.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "UK HYDROGRAPHIC OFFICE"
published: "2025-09-30"
---

# CASTLE Support and Development

Buyer: UK HYDROGRAPHIC OFFICE  
Current stage: Planning  
OCID: ocds-h6vhtk-05269b

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05269b)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05269b.json)

## Summary

The UK Hydrographic Office, a central government public authority located in Taunton, has announced the upcoming procurement process titled "CASTLE Support and Development". This procurement falls under the services category, specifically focusing on IT services such as consulting, software development, internet services, and support, relevant to geospatial and maritime industry products. The process is currently in the planning stage, with an open procedure method set to commence the contract from 8th November 2026 until 7th November 2031. The procurement value is estimated at £6,000,000, with a gross amount of £7,200,000. Businesses interested in this tender should anticipate the future notice scheduled for 1st March 2026.

This tender presents significant opportunities for businesses specialising in IT services to expand their portfolio by working with a reputable government agency. It is particularly well-suited for small and medium enterprises (SMEs) looking to deliver innovative solutions within the geospatial and maritime sectors. Companies with expertise in software development, consulting, and internet support can leverage this opportunity to demonstrate their capabilities and secure a long-term contract with an influential central government body. The procurement is above the financial threshold, indicating a substantial engagement, which could drive business growth and increase market presence for the successful bidder.

## Notice

Support of Production Systems supporting Geospatial and maritime industry products

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/060869-2025 |
| Notice type | UK1 - Pipeline Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 30 Sep 2025 |
| Submission deadline | Not specified |
| Future notice date | 1 Mar 2026 |
| Award date | Not specified |
| Contract period | 8 Nov 2026 - 7 Nov 2031 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £6,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UK HYDROGRAPHIC OFFICE |
| Locality | TAUNTON |
| Post town | Taunton |
| Postcode | TA1 2DN |
| Country | England |
| ITL 1 | TLK South West (England) |
| ITL 2 | TLK6 North Somerset, Somerset and Dorset |
| ITL 3 | TLK62 Somerset |
| Local authority | Somerset |
| Electoral ward | Taunton East |
| Westminster constituency | Taunton and Wellington |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 72 - IT services: consulting, software development, Internet and support

### Codes

- 72000000 - IT services: consulting, software development, Internet and support

## Release History

- 30 Sep 2025 at 12:05 - PlanningUpdate - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/060869-2025
- 30 Sep 2025 at 11:57 - PlanningUpdate - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/060862-2025
- 27 May 2025 at 09:02 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/027590-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/060869-2025
  30th September 2025 - Pipeline notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/060862-2025
  30th September 2025 - Pipeline notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/027590-2025
  27th May 2025 - Pipeline notice on Find a Tender

## Notice URLs

- 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-05269b. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05269b.json.