Thanks for your help, much appreciated.
John
See link
Study Finds Security Flaws in Routers Bundled by Big UK ISPs - ISPreview UK
There was a problem with WPS on early BT Homehubs, if I remember correctly Homehub 1 and 2. BT turned off WPS until an update was pushed out.
After those versions there were no security issues with WPS.
From memory there was a thread with information from the moderators regarding it however I can not find it at present.
BT have disabled WPS Pin which improves WPS security (as does WPA3) but the problem is in the WPS specification itself not specifically in the router software.
Likewise WPA3 capable routers are also backward compatible with WPA2 which kind of negates the security improvements made.