Buy and buy...
“We have what we call a build and buy strategy. In the last 20 years we’ve gone from 1,500 or so people to over 70,000, and there’s almost an even balance between growth acquisition and organic,”
No. They grow by acquisition. Up until they acquired Logica a few years ago, they doubled in size every 4 years. No way could you do that organically. Even they eventually realised that that was unsustainable.