 Wright said that the entire digitised contents of the British Library could be transferred down that set of cables in about 40 seconds.On the same programme, Tim Berners-Lee explained how huge volumes of data are analysed by GCHQ computer programmes to identify trends of communication which are deemed to require further examination.On 20 November 2014, Channel 4 News broadcast an investigation prepared in collaboration with German broadcaster Westdeutscher Rundfunk (WDR).