Mr Davies told M Brousse: "We know it is not all your fault. It is a fragmented service. But the trains run late more often than not and, as we have seen again today, when they do arrive there are not enough carriages." Many of the old "slam door" trains, of 1960 vintage, have come up for their 250,000 miles service all at the same time, said M Brousse. This, he said, had resulted in a shortage of carriages.