The guidance document relating to Two-Stage Applications has been updated to include the requirement for all requests for consideration of the technical equivalence of a new source with that currently approved to be supported by 5 batch data, methods of analysis and validation data and details of the method of manufacture.
Applications for the consideration of technical equivalence of new sources will not be accepted without these supporting data for the new technical
http://www.pesticides.gov.uk/approvals.asp?id=2820