Update on 31st January, 2019: We have implemented some changes such that our site is now always accessed securely using the HTTPS protocol. If you ever receive a “Not secure” warning from your browser when visiting this site then something is wrong; please report this to nigelvbartlett@hotmail.com as soon as possible.
Sorry for not having been in touch for a prolonged period because of ill health.
Trying now to resume contact.