Reference for http://api.erg.ic.ac.uk/AirQuality/Information/AirPollutionGuide

This lists all of the air pollution guide items. Data returned in XML format

Url: http://api.erg.ic.ac.uk/AirQuality/Information/AirPollutionGuide

HTTP Method: GET

Message direction	Format	Body
Request	N/A	The Request body is empty.
Response	Xml	The Response body is arbitrary XML.