Other financial assets (Tables)

12 Months Ended

Dec. 31, 2017

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Summary of Other Financial Assets

All figures in £ millions	2017			2016
At beginning of year		65			143
Exchange differences		(4	)		8
Acquisition of investments		3			6
Fair value movements		13			—
Disposal of investments		—			(92	)
At end of year		77			65