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Mr. Clemitson
asked the Secretary of State for Social Services how many psychosurgical operations were carried out in NHS hospitals in 1974 and in each of the 10 previous years.
Dr. Owen
Information an psychosurgical operations, obtained from the Hospital In-patient Inquiry, is available only for the years 1966 to 1972 and is as follows:
| Year | Estimated Numbers (England and Wales) |
| 1966 | 380 |
| 1967 | 240 |
| 1968 | 200 |
| 1969 | 230 |
| 1970 | 280 |
| 1971 | 290 |
| 1972 | 170 |
- 1966 Leucotomy, lobotomy, topectomy and tractotomy
- 1967/68 Leucotomy
- 1969 onwards Leucotomy, lobotomy and tractotomy.