Periodical Operating Notices were published 4-weekly and comprised of updates to the Sectional Appendix as well as updates to other official documents. They were numbered by the week in which they were published, e.g. ND 40D was published in week 40. See also the list of Sectional Appendices in the library.
British Railways Eastern Region
Northern Area – North
- 1970 ND 39D
- 1970 ND 43D
- 1970 ND 47D
- 1971 ND 3D
- 1971 ND 7D
- 1971 ND 11D
- 1971 ND 15D
- 1971 ND 19D
- 1971 ND 51D
- 1974 ND 30D
- 1974 ND 38D
- 1974 ND 46D
- 1975 ND 38D
- 1979 ND 48D
- 1980 ND 48D
- 1981 ND 49D
- 1982 ND 32D
- 1982 ND 40D
- 1982 ND 49D
- 1984 ND 32D
- 4th April 1989