| Level | Item |
| Reference Number (click to see whole series/group) | E5/35 |
| Extent | 1 file |
| Title | PREMISES: HEAD OFFICE, LONDON, AND GENERAL - ELECTRICITY |
| Date | 21 Jun 1955 - 26 Apr 1965 |
| Description | Change from DC to AC. Various Reports leading to conversion. Summary of events, November 1964. Relative costs of internal and external supply, 1965. |
| Original Reference | P611_16 |