First draft
Episodes were shown on 8 April as follows:
| Episode | Year |
| EF0151 | 1974 (Series 2) |
| EF0248 | 1975 (Series 3) |
| EF0569 | 1980 (Series 8) |
| EF0728 | 1982 (Series 10) |
| EF1038 | 1986 (Series 14) |
| 01754 | 1993 (Series 21) |
| 02189 | 1997 |
| 02345 | 1998 |
| 02507 | 1999 |
| 03150 | 2002 |
| 03412 | 2003 |
| 03708 | 2004 |
| 04019 | 2005 |
| 04644 | 2007 |
| 04957 | 2008 |
| 05265 | 2009 |
| 05577 | 2010 |
| 05578 | 2010 |
| 05890 | 2011 |