Thomas Keating LIMITED

Thomas Keating LIMITED, a United Kingdom-based manufacturer of precision optical and RF instrumentation, supplies specialized components for federal research institutions as a prime contractor on full-and-open purchase orders with no set-aside designations. The company is structured as a tax-exempt corporate entity and manufactures goods including optical instruments, waveguide assemblies, cryogenic mixers, and detector components for submillimeter astronomy and cryogenic physics research.

Thomas Keating LIMITED operates exclusively as a prime contractor (100% of awards) and does not subcontract federal work. Its customer base concentrates on civilian research agencies. The Smithsonian Institution dominates both award count and dollar value, with thirteen awards and $358 thousand in combined potential value—82% of the vendor's recent award footprint by count. The National Institute of Standards and Technology ($248 thousand across two awards), NASA's Shared Services Center ($179 thousand across four awards), the National Institute of Diabetes and Digestive and Kidney Diseases ($103 thousand across four awards), and the Office of Naval Research ($47 thousand across four awards) comprise the remainder of the top five. The vendor's category concentration reflects this specialization: optical instrument and lens manufacturing (15 awards) and analytical laboratory instrument manufacturing (8 awards) anchor the portfolio, supplemented by antennas and waveguides (6 awards) and related test equipment.

Recent work includes a $29.2 thousand purchase order from the Smithsonian awarded March 25, 2026, for WSMA receiver components (completion June 3, 2026); a $62 thousand order in February 2023 for WSMA receiver cartridge optics; a $54 thousand order in May 2023 for mixer blocks for W/SMA cryostats; and a $28.3 thousand purchase order from the National Institute of Diabetes and Digestive and Kidney Diseases in August 2021 for design and manufacture of an HE11 waveguide. Historical order values range from approximately ten thousand to one hundred thousand dollars. Activity remains sparse and episodic—two awards in 2019, four in 2020, two in 2021, two in 2023, one in 2026—with a combined potential value of $1.1 million across all thirty-three awards since 2007, all obligated.