I don't often read parliamentary reports, so I've only just been made aware of one angle to the report hotly discussed in this thread.
The authors have full legal protection - they could slander/libel Sky as much as they want. They don't need to worry about the niceties of "evidence".
So if they actually think Sky/Wiggins cheated, they would surely have said so. Instead they've made it quite clear that they didn't:
“
This does not constitute a violation of the World Anti-Doping Agency code, but it does cross the ethical line that David Brailsford says he himself drew for Team Sky. In this case, and contrary to the testimony of David Brailsford in front of the committee, we believe that drugs were being used by Team Sky, within the Wada rules, to enhance the performance of riders, and not just to treat medical need.
”