And the number charged and found guilty?
I wonder how many of the 1047 arrests etc actually resulted in charges, and being found guilty of those charges. It's relatively easy to arrest someone - the police do it all the time to people who aren't necessarily guilty of the crime they're being arrested for - getting stuff by the CPS is a lot harder, and requires a higher level of evidence. If there haven't been a significant number of successful prosecutions, then all that 1047 number shows is that the e-borders pilot has led to a significant number of wrongful arrests and other interventions, adversly impacting the lives of a number of (maybe) law abiding and innocent people.
Of course, I'm happy to be proved wrong, and to find out that there were, say, 500 successful prosecutions from this pilot.