About: http://webisa.webdatacommons.org/355123285

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	And 5 minutes of research would have shown you that the 100-200 billion pounds is a estimate of the global revenue from such a tax (on case it was ambiguous in the video):
http://www.w3.org/ns/prov#wasQuotedFrom	consultingbyrpm.com