It's been a while since I've revealed my trainspotting tendencies, so it's about time I did another 'fascinating tube facts' thing:

Marcus was wondering what the woman who does the announcements on the tube looks like. Well, there are several announcers. Tube drivers have nicknamed the woman with the posh voice 'Sonia' because "she gets on yer nerves". However, Mike may be well-placed to recognise her voice, as she is BBC Nottingham radio presenter Janet Mayo.

The voice on the Northern line is known as Celia, which supposedly stands for "Creates Excellent Line Information Ambience".

The voice of the Bakerloo and Victoria lines belongs to writer Emma Clarke.

The shouty bloke who orders you to "mind the gap" is named Peter Lodge, and although I can't find out anything about him, here he is in all his barking glory.