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Companies/16625534

Amplisi Limited

Other research and experimental development on natural sciences and engineering · Sheffield

ActiveUnited KingdomIncorporated 2025Private Limited Company
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Ownership evidence

Reported ownership and control rights in this business, with source dates.

Reported ownership & control

1 without an end date · 2 ceased
Northern Gritstone LimitedCorporate
Shares: over 25%, up to 50%Voting rights: over 25%, up to 50%

Notified 2026-03-04 · No cessation recorded

Source record 2881532
Show 2 ceased records
SP
Dr Siddharth Vijay PatwardhanIndividual
Shares: over 25%, up to 50%Voting rights: over 25%, up to 50%

Notified 2025-08-04 · Ceased 2026-03-04

Source record 2545333
GC
Dr Gwendolen Frances Ann Blake ChimonidesIndividual
Shares: over 50%, up to 75%Voting rights: over 50%, up to 75%

Notified 2025-08-04 · Ceased 2026-03-04

Source record 2546140

People behind the business

Current appointments and the wider business interests of each person.

Appointments

6 current · 2 historical
RM
Ross Alexander McmasterCurrent secretary
Appointed 2026-06-17
SP
Stephen Edward PriceCurrent director
Appointed 2026-03-04
+1 other
GL
Gareth LlewellynCurrent director
Appointed 2026-03-04
+5 others
RS
Ruth SayersCurrent director
Appointed 2025-11-24
+2 others
SP
Siddharth PatwardhanCurrent director
Appointed 2025-08-04 · 1 yr · Director
GC
Gwendolen Frances Ann Blake ChimonidesCurrent director
Appointed 2025-08-04 · 1 yr · Director
Show 2 historical appointments
RM
Ross Alexander McmasterResigned director
Resigned 2025-11-24
RM
Ross Alexander McmasterResigned secretary
Resigned 2025-08-04

Board profile

People with appointments
6
Directors assessed
5
Median age
45
Under 35
0
65 and over
0
Disqualified match
None active