First draft
Epsiodes were shown on 28 April as follows:
| Episode | Year |
| EF0253 | 1975 (Series 3) |
| EF0352 | 1977 (Series 5) |
| EF0661 | 1981 (Series 9) |
| EF0798 | 1983 (Series 11) |
| EF1144 | 1987 (Series 15) |
| EF1244 | 1988 (Series 16) |
| 01655 | 1992 (Series 20) |
| 01864 | 1994 (Series 22) |
| 02352 | 1998 |
| 02516 | 1999 |
| 03427 | 2003 |
| 03725 | 2004 |
| 04036 | 2005 |
| 04348 | 2006 |
| 04972 | 2008 |
| 05282 | 2009 |
| 05594 | 2010 |
| 05906 | 2011 |
| 05907 | 2011 |