Holding(s) in Company

TR-1: Standard form for notification of major holdings

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible)i
1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attachedii:			Oxford Instruments PLC
1b. Please indicate if the issuer is a non-UK issuer   (please mark with an “X” if appropriate)
Non-UK issuer
2. Reason for the notification (please mark the appropriate box or boxes with an “X”)
An acquisition or disposal of voting rights						X
An acquisition or disposal of financial instruments
An event changing the breakdown of voting rights
Other (please specify)iii:
3. Details of person subject to the notification obligationiv
Name			Ameriprise Financial, Inc. and its group
City and country of registered office (if applicable)			Minneapolis, USA
4. Full name of shareholder(s) (if different from 3.)v
Name			Vidacos Nominees Limited
City and country of registered office (if applicable)
5. Date on which the threshold was crossed or reachedvi:			20/12/2019
6. Date on which issuer notified (DD/MM/YYYY):			23/12/2019
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 of issuervii
Resulting situation on the date on which threshold was crossed or reached	12.985%	0.000%		12.985%	57,380,104
Position of previous notification (if applicable)	13.958%	0.00%		13.958%

8. Notified details of the resulting situation on the date on which the threshold was crossed or reachedviii
A: Voting rights attached to shares
Class/type of shares ISIN code (if possible)		Number of voting rightsix					% of voting rights
		Direct (Art 9 of Directive 2004/109/EC) (DTR5.1)		Indirect (Art 10 of Directive 2004/109/EC) (DTR5.2.1)			Direct (Art 9 of Directive 2004/109/EC) (DTR5.1)		Indirect (Art 10 of Directive 2004/109/EC) (DTR5.2.1)
GB0006650450		22,094		7,428,565			0.039%		12.946%
SUBTOTAL 8. A		7,450,659					12.985%
B 1: Financial Instruments according to Art. 13(1)(a) of Directive 2004/109/EC (DTR5.3.1.1 (a))
Type of financial instrument		Expiration datex	Exercise/ Conversion Periodxi			Number of voting rights that may be acquired if the instrument is exercised/converted.			% of voting rights
			SUBTOTAL 8. B 1
B 2: Financial Instruments with similar economic effect according to Art. 13(1)(b) of Directive 2004/109/EC (DTR5.3.1.1 (b))
Type of financial instrument	Expiration datex		Exercise/ Conversion Period xi		Physical or cash settlementxii			Number of voting rights	% of voting rights
					SUBTOTAL 8.B.2

9. Information in relation to the person subject to the notification obligation (please mark the applicable box with an “X”)
Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuerxiii
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 entityxiv (please add additional rows as necessary)				X
Namexv	% 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
Ameriprise Financial, Inc.	%	%	%
Ameriprise International Holdings GmbH	%	%	%
Threadneedle Asset Management Holdings SARL	%	%	%
Threadneedle Holdings Limited	%	%	%
TAM UK Holdings Limited	%	%	%
Threadneedle Asset Management Holdings Limited	%	%	%
TC Financing Limited	%	%	%
Threadneedle Asset Management Limited	12.976%	%	12.976%
Ameriprise Financial, Inc.	%	%	%
Columbia Management Investment Advisers, LLC	%	%	%
10. In case of proxy voting, please identify:
Name of the proxy holder		N/A
The number and % of voting rights held		N/A
The date until which the voting rights will be held		N/A
11. Additional informationxvi
Threadneedle Asset Management Limited is wholly owned by TC Financing Limited, which is itself wholly owned by Threadneedle Asset Management Holdings Limited, which is itself wholly owned by TAM UK Holdings Limited, which is itself wholly owned by Threadneedle Holdings Limited, which is itself wholly owned by Threadneedle Asset Management Holdings SARL, which is itself wholly owned by Ameriprise International Holdings GmbH, which is itself wholly owned by Ameriprise Financial, Inc. Columbia Management Investment Advisers, LLC is wholly owned by Ameriprise Financial, Inc

Place of completion	Swindon, UK
Date of completion	23/12/2019

12. Contact Name	Susan Johnson-Brett, Oxford Instruments plc
13. Contact Telephone Number	01865 393324