On the District Line train at Blackfriars Underground station. These have been up since long before the bombings in July, so don’t get any particular ideas about overreaction, although it does seem a slightly excessive response.
So remember, if you plan on slashing the seats on the London Underground, you can expect the Metropolitan Police to send Jean Reno in a helicopter down the tunnel after you.
Significantly, these signs only appear on the oldest Underground lines, the ones with the bigger , shallower tunnels; so this does not appear to be an idle threat.
History buffs will note the iPod Nano poster on the platform. I’ve been meaning to take a photo of this sign for months but haven’t had the chance until now.
