Richard Littlejohn: So Who Did Plant The London Tube Bomb?

As the investigation into the Parsons Green Tube bombing enters its second week, police are still trying to establish who was behind this latest terror attack.

No, it wasn’t those pesky Trans Exclusionary Radical Feminists again, or Far Right extremists, or the provisional wing of Ukip, trying to stir up hatred against immigrants after the Brexit vote.

So who was it? Go on, have a guess.