SENIOR PLC
Senior plc is the holding company for a global group of firms in the manufacturing and engineering industries, headquartered in Rickmansworth, England. The Company was listed on the London Stock Exchange and was a constituent of the FTSE 250 Index until it was acquired by Tinicum Inc. and Blackstone Private Investments Advisors in October 2026.
Basic company information
Each field links to its source. Financial figures retain their reporting periods; background references are identified in the source list.
- Business sectors
- industrial manufacturing [1]
- Company / filing name
- SENIOR PLC [2]
- Headquarters location
- Rickmansworth [1]
- Founded
- 1933 [1]
- Legal form
- public limited company [1]
- Official website
- www.seniorplc.com ↗ [1]
- CIK
- 1329213 [2]
- Country in background record
- United Kingdom [1]
- Symbols / exchanges
- SNIRF (OTC) [2]
Company positioning and business
Senior plc is the holding company for a global group of firms in the manufacturing and engineering industries, headquartered in Rickmansworth, England. The Company was listed on the London Stock Exchange and was a constituent of the FTSE 250 Index until it was acquired by Tinicum Inc. and Blackstone Private Investments Advisors in October 2026. [3]
Background text: Wikipedia contributors, Senior plc. Selected introductory paragraphs, licensed under CC BY-SA 4.0. Official filing data is cited separately.
Financial year, securities and disclosures
Listed securities: SNIRF (OTC). Multiple symbols may represent different share classes or securities of the same registrant. [2]
History and key events
Founding / inception date recorded in Wikidata. [1]
Financial results and regulatory disclosures
No individual financial documents have been indexed yet. Open the source to consult company disclosures. [2]
Related entities and concepts
Frequently asked questions
When was SENIOR PLC founded?
Founded: 1933. The linked source provides the background record. [1]
Where is the headquarters of SENIOR PLC?
Headquarters location: Rickmansworth. The linked source provides the background record. [1]
Which business sectors are recorded for SENIOR PLC?
Business sectors: industrial manufacturing. The linked source provides the background record. [1]
Sources and review dates
- Wikidata — company background record (CC0) ↗
- Company identity and profile data ↗
- Wikipedia contributors — Senior plc (CC BY-SA 4.0) ↗
Reviewed 23 October 2026. Financial periods and historical event dates are shown separately. Figures reflect their stated source dates; this page is not a live quote or investment recommendation.