Holding(s) in Company

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB0006650450

Issuer Name

OXFORD INSTRUMENTS PLC

UK or Non-UK Issuer

2. Reason for Notification

An acquisition or disposal of voting rights.

3. Details of person subject to the notification obligation

Name

Janus Henderson Group plc

City of registered office (if applicable)

St Helier

Country of registered office (if applicable)

Jersey

4. Details of the shareholder

Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above

City of registered office (if applicable)

Country of registered office (if applicable)

5. Date on which the threshold was crossed or reached

18-May-2023

6. Date on which Issuer notified

22-May-2023

7. Total positions of person(s) subject to the notification obligation

	% of voting rights attached to shares (total of 8.A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer
Resulting situation on the date on which threshold was crossed or reached	4.370000	0.620000	4.990000	2878654
Position of previous notification (if applicable)	4.500000	0.520000	5.020000

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached

8A. Voting rights attached to shares

Class/Type of shares ISIN code(if possible)	Number of direct voting rights (DTR5.1)	Number of indirect voting rights (DTR5.2.1)	% of direct voting rights (DTR5.1)	% of indirect voting rights (DTR5.2.1)
GB0006650450	0	2520814	0.000000	4.370000
Sub Total 8.A	2520814		4.370000%

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument	Expiration date	Exercise/conversion period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights
CFD			357840	0.620000
Sub Total 8.B1			357840	0.620000%

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument	Expiration date	Exercise/conversion period	Physical or cash settlement	Number of voting rights	% of voting rights

Sub Total 8.B2

9. Information in relation to the person subject to the notification obligation

2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary)

Ultimate controlling person	Name of controlled undertaking	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
Janus Henderson Group plc	Janus Henderson UK (Holdings) Limited	4.370000	0.620000	4.990000%
Janus Henderson UK (Holdings) Limited	Janus Henderson Investors UK Limited	4.370000	0.620000	4.990000%
Janus Henderson Investors UK Limited		4.370000	0.620000	4.990000%