In other another key development, explosives have been found in an abandoned car linked to the attacks at Luton railway station.

This was presumeably the car they used, so they then took the bombs on the train with them to London. Blimey.

Personal documents have been found at all four bomb scenes.

If this was there, you have to assume they wanted it to be found. I don’t buy the ‘trickery’ story, I guess this was their signature as ‘martyrs’. Which would lead you to think that this trail is going to run into a dead end at some point.

There seem to be two possibilities: a separate mastermind, or one of the people who blew themselves up actually made the bombs. The explosives evidence will determine this, but my feeling is that if they put out the weekend call for Setmarian they already had the key details on this.

Also four Asian lads from Leeds wouldn’t really tie with either of the claims to date, so the probability is that there is another component.

The four travelled by car from West Yorkshire to Luton and then by train to Kings Cross station shortly before the attacks were launched on Thursday morning, police said at a press conference.

In the latest sky summary, it was just instinctual.

Not necessarily. It is a motorway direct car drive from Leeds to Luton, then from Luton there is - I think - a direct train to Kings Cross. Better to leave the car there, no parking problems, better for nerves, and no car in the vicinity after.

This suggests they met someone in, or near Kings Cross, where they received the bomb material.

The immediate questions are who was the ‘fourth man’ (the police seem to be saying they have only identified three) and much more importantly who was running the show. I still stick with the ‘brains’ being the same ones as Madrid, but we need to wait and see.