---
name: "Black Diamond Security Ltd"
supplier_id: "GB-FTS-17789"
organisation_scale: "sme"
total_awards: 5
total_spend_gbp: 1750000
median_contract_gbp: 1750000
lots_bid: 5
lots_won: 0
win_rate_pct: null
median_discount_pct: 30
url: "https://tenderline.uk/suppliers/black-diamond-security-ltd-coh-07367704"
generated: "2026-10-08T01:11:48.584Z"
machine_api: "https://tenderline.uk/api/public/suppliers/GB-FTS-17789/markdown"
---

# Black Diamond Security Ltd · UK Public Sector Contract Record

Source: [Tenderline](https://tenderline.uk/suppliers/black-diamond-security-ltd-coh-07367704) — Official UK public procurement supplier dossier compiled from Find a Tender notices.

> **Tenderline Supplier Summary:** Black Diamond Security Ltd is a SME public sector supplier in the UK. Tracked in Tenderline with 5 published contract awards across official contracting authorities.

## Key Information
- **Supplier Name:** Black Diamond Security Ltd
- **Organisation Scale:** SME
- **Company Registration (CRN):** `GB-FTS-17789` (Find a Tender organisation id)
- **Total Published Awards:** 5
- **Primary Sector:** [Security services](https://tenderline.uk/sectors/security-services-79710000)
- **Company Status:** Active

- **Tenderline Record:** https://tenderline.uk/suppliers/black-diamond-security-ltd-coh-07367704

## Bidding & Win Rate Record
- **Lots Won:** 0 won, 0 lost, 0 pending
- **Total Bid Activity:** 5 lots bid across 2 procurement procedures
- **Framework & DPS Appointments:** 0 panel appointments across 5 vehicle lots
- **Buyer Relationships:** Bid with 2 distinct contracting authorities

## Winning Pricing & Discount Benchmarks
- **Median Award Pricing:** 30% below published budget estimate (median of 1 comparable winning awards)

## Market Volume & Benchmarks
- **Total Published Contract Spend:** £1.8m
- **Median Contract Value:** £1.8m

## Delivery Geography
- **Active Delivery Regions:** Nationwide (UK), [Yorkshire and the Humber](https://tenderline.uk/regions/yorkshire-and-the-humber), [North East England](https://tenderline.uk/regions/north-east), [North West England](https://tenderline.uk/regions/north-west)

## Top Public Sector Clients
1. **[Crescent Purchasing Consortium Limited](https://tenderline.uk/buyers/crescent-purchasing-consortium-limited-GB-PPON-PZPR-8554-XHNX):** 1 procedures (2 awards)
2. **[AFFINITY WATER LIMITED](https://tenderline.uk/buyers/affinity-water-limited-GB-COH-2546950):** 1 procedures
3. **[City of Doncaster Council](https://tenderline.uk/buyers/city-of-doncaster-council-rsh-00ce):** 1 procedures
4. **[NETWORK RAIL INFRASTRUCTURE LIMITED](https://tenderline.uk/buyers/network-rail-infrastructure-limited-GB-PPON-PNZN-9524-VCQJ):** 1 procedures

## Largest Contract Awards Won
Top public sector contracts awarded to this supplier:
1. **[City of Doncaster Council](https://tenderline.uk/buyers/city-of-doncaster-council-rsh-00ce):** £1.8m · [Provision of Security Services](https://tenderline.uk/tenders/provision-of-security-services-ocds-h6vhtk-049282)

## Contract Expiries & Upcoming Recompetes
- **Active Contracts Ending in 18 Months:** 0

## Competitive Supplier Intelligence
> **Full Win-Loss & Award Analysis:** Complete historical contract timelines, pricing movement benchmarks, buyer relationship networks, and competitor analysis are available on Tenderline:
> [View complete Black Diamond Security Ltd public contract history on Tenderline](https://tenderline.uk/suppliers/black-diamond-security-ltd-coh-07367704#contract-history)

## Provenance and Open Data
- **Data Source:** Official award notices published under the Open Government Licence v3.0 on Find a Tender Service.
- **Canonical Profile:** https://tenderline.uk/suppliers/black-diamond-security-ltd-coh-07367704
- **Full Catalogue Machine Access:** https://tenderline.uk/llms.txt