I don't think the first investigation thought to collect that information. I know that Mark Warner collected certain information from it's clients, but not how this was passed on to the people working for Greentrust, which ran the Ocean Club.
According to Scotland Yard, the phone records had been "looked at" during the initial Portuguese police investigation but not in detail.
Jim Gamble, the former head of the UK's Child Exploitation and Online Protection Centre told the BBC's Today programme he had recommended the "cell dump" was looked at again in his 2010 review of the case.
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Mr Gamble said the EU data retention directive, which compels telephone companies to retain call and internet records for a period of time, was at an "immature stage" in 2007.
But he said it appeared the data "wasn't properly or appropriately interrogated," at the time.
In UK investigations, he would expect the data to have been examined almost immediately, he said, but the "complex nature and geography" had made it more difficult.
https://www.bbc.co.uk/news/uk-24386130The information was available to the first investigation I just don't think they used it properly.