OXIG Oxford Instruments Plc

For filings with the FSA include the annex

For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying       Oxford Instruments plc
issuer of existing shares to which voting
rights are attached: ii

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights                               x

An acquisition or disposal of qualifying financial instruments which
may result in the acquisition of shares already issued to which voting
rights are attached

An acquisition or disposal of instruments with similar economic effect
to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please
specify):

3. Full name of person(s) subject to  Baillie Gifford & Co.
the notification obligation: iii

4. Full name of shareholder(s) (if
different from 3.):iv

5. Date of the transaction and date   15 April 2014
on which the threshold is crossed or
reached: v

6. Date on which issuer notified:     16 April 2014

7. Threshold(s) that is/are crossed   5%
or reached: vi, vii

8. Notified details:
A: Voting rights attached to shares viii, ix

Class/type of  Situation         Resulting situation after
shares         previous          the triggering
               to the triggering transaction
               transaction
if possible
using                   Number             Number             % of voting
the ISIN CODE  Number   of       Number    of                 rights x
               of       Voting   of        voting
               Shares   Rights   shares    rights

                                 Direct    Direct   Indirect  Direct   Indirect
                                           xi       xii

GB0006650450   Below 5% Below 5% 2,917,516 N/A      2,917,516 N/A      5.10%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial Expiration Exercise/         Number of voting   % of voting
instrument        date xiii  Conversion Period rights that may be rights
                             xiv               acquired if the
                                               instrument is
                                               exercised/
                                               converted.

N/A

C: Financial Instruments with similar economic effect to Qualifying Financial
Instruments xv, xvi

Resulting situation after the triggering transaction

Type of        Exercise Expiration Exercise/  Number of voting  % of voting
financial      price    date xvii  Conversion rights instrument rights xix, xx
instrument                         period     refers to
                                   xviii

                                                                Nominal  Delta

N/A

Total (A+B+C)

Number of voting rights                 Percentage of voting rights

2,917,516                               5.10%

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

In the narrative below, the figures in [ ] indicate the amount of voting rights
and the percentage held by each controlled undertaking where relevant.

Baillie Gifford & Co, a discretionary investment manager, is the parent
undertaking of an investment management group.

Its wholly-owned subsidiary undertaking Baillie Gifford Overseas Limited
[1,205,990:2.11%] is also a discretionary investment manager.

Its wholly-owned subsidiary undertaking Baillie Gifford & Co Limited [778,820:
1.36%] is an OEIC Authorised Corporate Director and Unit Trust Manager which
has delegated its discretionary investment management role to Baillie Gifford &
Co.

Its wholly-owned subsidiary undertaking Baillie Gifford Life Limited [280,360:
0.49%] is a life assurance company which procures discretionary investment
management services from Baillie Gifford & Co in respect of its own account
shareholdings.

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy
holder will cease to hold:

12. Date on which proxy holder will
cease to hold voting rights:

13. Additional information:                     Oxford Instruments plc

14. Contact name:                                 Susan Johnson-Brett

15. Contact telephone number:                        01865 393 200