Her birth index:

Surname  First name(s)  District    Vol  Page
Births Jun 1907   (>99%)
BARNARD  Female         Kensington  1a   120
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None of these Pamela Barnard marriages look like hers:

Surname   First name(s)   Spouse   District   Vol  Page

Marriages Sep 1925   (>99%)
Barnard Pamela Scott Sheffield 9c 1252
Marriages Jun 1941   (>99%)
Barnard Pamela K Coombes Worthing 2b 1074
Marriages Jun 1942   (>99%)
Barnard Pamela M Watmough Wandsworth 1d 862
Marriages Sep 1942   (>99%)
Barnard Pamela Munro Kensington 1a 195
Marriages Jun 1943   (>99%)
Barnard Pamela J M Dooley Maidenhead 2c 1199   
Marriages Sep 1945   (>99%)
Barnard Pamela I Taylor Romford 4a 1909
Marriages Mar 1946   (>99%)
BARNARD Pamela Lenheim Surrey N.E. 2a 69
BARNARD Pamela V Bell Surrey N.W. 2a 878
Marriages Dec 1946   (>99%)
Barnard Pamela K West Worthing 5h 1189
Marriages Jun 1948   (>99%)
Barnard Pamela J M Fitzgerald Kensington 5c 2618
Barnard Pamela M Fielding Wandsworth 5b 1924
Marriages Sep 1948   (>99%)
Barnard Pamela F M Foord Lewes 5h 865
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There are no deaths of a Pamela Barnard that look even faintly possible.
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In the 1939 register she was in Kent living with widow:

1 Bourne Cottages , Bridge-Blean R.D., Kent, England

FIRST NAME(S)  LAST NAME(S)  DOB  SEX  OCCUPATION  MARITAL STATUS  SCHEDULE  SCHEDULE SUB NUMBER  
Pamela H (S)  Barnard  27 May 1907  F  Private Means           Single   168  2
Sarah J       Francis  19 Oct 1878  F  Unpaid Domestic Duties  Widowed  168  1
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The above led to her death index, with not quite the same birth date:

First name(s)               PAMELA
Last name                   BARNARD
Gender                      Female
Birth day                   16
Birth month                 5
Birth year                  1907
Death quarter               2
Death year                  1997
District                    Camden
District number             2501E
Register number             E48A
Entry number                095
Date of registration mm/yy  0697
County                      London
Country                     England
Record set                  England & Wales Deaths 1837-2007
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So she died unmarried and probably with no children, though if a will could be purchased, that might clarify this.  Howver the will probate index says that all that they can provide is the Grant document.
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Her probate entry:

Surname  First name  Date of probate  Probate number  Date of death  Document type  Registry
BARNARD  PAMELA HILDA STOPFORD  30 October 1997  9752430723  30 May 1997  Grant only  Winchester
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