Question:
Which position did David Quarrey hold in Nov, 2015?

Context:
 David Quarrey holds the position of ambassador of the United Kingdom to Israel from Jan, 2015 to Jan, 2019. 
 David Quarrey holds the position of Permanent Representative of the United Kingdom to NATO from Apr, 2022 to Dec, 2022. 
 David Quarrey holds the position of National Security Advisor from Sep, 2020 to Mar, 2021.

Answer:
ambassador of the United Kingdom to Israel