First draft
Episodes were shown on 1 July as follows:
| Episode | Year |
| EF0173 | 1974 (Series 2) |
| EF0591 | 1980 (Series 8) |
| EF1062 | 1986 (Series 14) |
| 01778 | 1993 (Series 21) |
| 02223 | 1997 |
| 02383 | 1998 |
| 02544 | 1999 |
| 03211 | 2002 |
| 03478 | 2003 |
| 03780 | 2004 |
| 04088 | 2005 |
| 04717 | 2007 |
| 05025 | 2008 |
| 05026 | 2008 |
| 05336 | 2009 |
| 05644 | 2010 |
| 05645 | 2010 |
| 05961 | 2011 |