TR-1: Standard form for notification of major holdings
1. Issuer Details
ISIN
GB0006650450
Issuer Name
OXFORD INSTRUMENTS PLC
UK or Non-UK Issuer
UK
2. Reason for Notification
An acquisition or disposal of voting rights
3. Details of person subject to the notification obligation
Name
Lady Kathleen Audrey Wood
City of registered office (if applicable)
Little Wittenham
Country of registered office (if applicable)
England
4. Details of the shareholder
+--------------+-------------------------+----------------------------+
|Name |City of registered office|Country of registered office|
+--------------+-------------------------+----------------------------+
|The Sir Martin|Harwell, Didcot |U.K |
|Wood Residue | | |
|Trust | | |
+--------------+-------------------------+----------------------------+
5. Date on which the threshold was crossed or reached
26-May-2026
6. Date on which Issuer notified
26-May-2026
7. Total positions of person(s) subject to the notification obligation
+----------------+-----------+------------------+--------+-----------+
|. |% of voting|% of voting rights|Total of|Total |
| |rights |through financial |both |number of |
| |attached to|instruments (total|in % |voting |
| |shares |of 8.B 1 + 8.B 2) |(8.A + |rights held|
| |(total | |8.B) |in issuer |
| |of 8.A) | | | |
+----------------+-----------+------------------+--------+-----------+
|Resulting |2.765700 |0.000000 |2.765700|1526930 |
|situation on the| | | | |
|date on | | | | |
|which threshold | | | | |
|was crossed or | | | | |
|reached | | | | |
+----------------+-----------+------------------+--------+-----------+
|Position of |3.940000 |0.000000 |3.940000| |
|previous | | | | |
|notification | | | | |
|(if applicable) | | | | |
+----------------+-----------+------------------+--------+-----------+
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|Number of direct|Number of indirect|% of direct |% of indirect|
|of shares |voting rights |voting rights |voting rights|voting rights|
|ISIN |(DTR5.1) |(DTR5.2.1) |(DTR5.1) |(DTR5.2.1) |
|code(if | | | | |
|possible) | | | | |
+----------+----------------+------------------+-------------+-------------+
|Ordinary |790775 |736155 |1.432300 |1.333400 |
|Shares of | | | | |
|5p | | | | |
|each | | | | |
+----------+----------------+------------------+-------------+-------------+
|Sub Total |1526930 |2.765700% |
|8.A | | |
+----------+----------------+------------------+-------------+-------------+
8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))
+----------+----------+---------+-----------------------------------+------+
|Type of |Expiration|Exercise/|Number of voting rights that may be|% of |
|financial |date |conve |acquired if the instrument is |voting|
|instrument| |rsion |exercised/converted |rights|
| | |period | | |
+----------+----------+---------+-----------------------------------+------+
| | | | | |
+----------+----------+---------+-----------------------------------+------+
|Sub Total | | | |
|8.B1 | | | |
+----------+----------+---------+-----------------------------------+------+
8B2. Financial Instruments with similar economic effect according to
(DTR5.3.1R.(1) (b))
+--------------+----------+--------------+-----------+---------+------+
|Type of |Expiration|Exercise/conve|Physical or|Number of|% of |
|financial |date |rsion period |cash |voting |voting|
|instrument | | |settlement |rights |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 |Name of |% of voting rights|% of voting|Total of both if|
|controlling|controlled |if it equals or is|rights |it equals or is |
|person |undertaking|higher than the |through |higher than the |
| | |notifiable |financial |notifiable |
| | |threshold |instruments|threshold |
| | | |if it | |
| | | |equals or | |
| | | |is higher | |
| | | |than the | |
| | | |notifiable | |
| | | |threshold | |
+-----------+-----------+------------------+-----------+----------------+
| | | | | |
+-----------+-----------+------------------+-----------+----------------+
10. In case of proxy voting
Name of the proxy holder
The number and % of voting rights held
The date until which the voting rights will be held
11. Additional Information
12. Date of Completion
13. Place Of Completion
Little Wittenham, U.K
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