Andy,
Thank you so very much for posting this wonderful link.
My late mother served with the ATS but, until now, I had no tangible information which could help me to apply for her service record. However, thanks to you, it took me no more than a couple of minutes via the TNA Discovery search facility to trace her indexed data.
As she was born in 1925, her full record will be closed until 2040 - but I have now submitted an application for it to be opened to me.
Willyam