Holding(s) in Company

TR-1: Notifications of Major Interests in Shares
1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:		Oxford Instruments PLC
2. Reason for notification (yes/no)
An acquisition or disposal of voting rights			No
An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached			No
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments			No
An event changing the breakdown of voting rights			No
Other (please specify): Voluntary baseline disclosure in line with the UK implementation of the Amended Transparency Directive			Yes
3. Full name of person(s) subject to notification obligation:	Ameriprise Financial, Inc. and its group
4. Full name of shareholder(s) (if different from 3):	Vidacos Nominees Ltd State Street Nominees Limited Nortrust Nominees LTD State Street Bank & Trust Boston Securities Services Nominees Limited HSBC Global Custody Nominee (UK) Limited
5. Date of transaction and date on which the threshold is crossed or reached:	N/A - Voluntary baseline disclosure in line with the UK implementation of the Amended Transparency Directive
6. Date on which issuer notified:	30th November 2015
7. Threshold(s) that is/are crossed or reached:	Voluntary baseline disclosure in line with the UK implementation of the Amended Transparency Directive

8: Notified Details
A: Voting rights attached to shares
Class/type of shares If possible use ISIN code	Situation previous to the triggering transaction		Resulting situation after the triggering transaction
	Number of shares	Number of voting rights	Number of shares	Number of voting rights		Percentage of voting rights
			Direct	Direct	Indirect	Direct	Indirect
GB0006650450	4,983,663	4,983,663	26,235	26,235	4,218,372	0.046%	7.362%

B: Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date	Exercise/ conversion period	No. of voting rights that may be acquired if the instrument is exercised/converted.	Percentage of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Exercise Price	Expiration date	Exercise / conversion period	No. of voting rights instrument refers to	Percentage of voting rights
					Nominal	Delta

Total (A+B+C)
Number of voting rights	Percentage of voting rights
4,244,607	7.408%

9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable:

Threadneedle Asset Management Limited (7.408%) 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.

Proxy Voting:
10. Name of proxy holder:	N/A
11. Number of voting rights proxy holder will cease to hold:	N/A
12. Date on which proxy holder will cease to hold voting rights:	N/A

13. Additional information:	The Shares referred to in section 9 of this form are held in portfolios and funds managed on a discretionary basis by the entities set out in section 9. Please note that the Shares are held through certain nominee companies.
14 Contact name:	Susan Johnson-Brett Company Secretary
15. Contact telephone name:	01865 393 200