Changes of more than 15% power to weight after 1988= Q plate!
Read and weep at the pointlessness of it all!!!!
https://www.gov.uk/government/uploa...ical-interest-substantial-change-guidance.pdf
Read and weep at the pointlessness of it all!!!!
https://www.gov.uk/government/uploa...ical-interest-substantial-change-guidance.pdf