I visited London in November 2005 to travel on the Southern Electric Group's "Sussex Slammer" farewell tour on the Saturday. On the Sunday I travelled from London to Southampton.

Description of tour from the SEG website:
Southern and this group ran the last Mk1 EMU slam door railtour of all time on Saturday 19th November 2005. The day started bitterly cold and misty but soon developed into a crisp and bright autumnal day. A late change, made only five days before the tour due to operational and safety constraints, resulted in the train not running as originally intended as a twelve car formation to East Grinstead. The tour instead ran as two portions Victoria - East Grinstead - London Bridge before joining up at London Bridge to run the remainder of the tour as 12 cars. This change was viewed by the majority travelling as an improvement as it gave one last opportunity to experience a service of Mk1 EMUs splitting and joining. The tour ran mostly on or ahead of its revised timings throughout the day but with arrival back at Victoria only a few minutes late. An even later change (made whilst the tour was at Newhaven Marine) provided a bonus for those able to use the opportunity. As there was a conductor on board for the intended ECS back to Lovers Walk Southern's Commercial Director decided that passengers could be carried back to Brighton. A thoroughly enjoyable day during this well run tour was had by all and many grateful thanks are due to Southern for providing the last opportunity for enthusiasts to travel in Mk1 slam door EMUs and to mark their last run on the mainline in fine form.