| 2017 £m |
2016 £m |
2015 £m |
||||||||||
|
Active |
4,611 | 4,576 | 5,510 | |||||||||
|
Retired |
9,805 | 9,574 | 7,969 | |||||||||
|
Deferred |
5,369 | 5,504 | 4,231 | |||||||||
|
|
|
|
|
|
|
|||||||
| 19,785 | 19,654 | 17,710 | ||||||||||
|
|
|
|
|
|
|
|||||||
| The post-retirement benefit obligation analysed by membership category is as follows: | ||||||||||||
| 2017 £m |
2016 £m |
2015 £m |
||||||||||
|
Active |
514 | 594 | 499 | |||||||||
|
Retired |
981 | 1,099 | 887 | |||||||||
|
Deferred |
1 | — | 1 | |||||||||
|
|
|
|
|
|
|
|||||||
| 1,496 | 1,693 | 1,387 | ||||||||||
|
|
|
|
|
|
|
|||||||
| The weighted average duration of the defined benefit obligation is as follows: | ||||||||||||
| 2017 years |
2016 years |
2015 years |
||||||||||
|
Pension benefits |
16 | 16 | 16 | |||||||||
|
|
|
|
|
|
|
|||||||
|
Post-retirement benefits |
11 | 12 | 12 | |||||||||
|
|
|
|
|
|
|
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