The below is from Sex Matters' weekly memo and looks to be very useful.
'We’ve published a new resource – Data matters: practical guidance on collecting personal data about sex and transgender identity. This simple guide is intended to provide clear, workable advice, in line with current laws, to anyone who needs to collect data on sex in the public, private or voluntary sector in the UK. This is one of the things we get the most questions about in our inbox every week.
Alongside that publication is a template letter for anyone who wants to complain about data collection.'