@stephenw10
@SteveITS
It seemed a weird issue, I could navigate to the bbc.com, apple.com but netgate.com and this forum I could not resolve. I could ping those addresses.
I unticked the DNSSEC support, which gave me the above results.
So, just for laughs and giggles, I Factory Reset pFsense and manually inputted the barest setups and went and unticked the DNSSEC support button and ALL was GOOD. Could get everywhere.
Am assuming that since this has been an old setup that I have added and added (for over 10 years), that along the way there is something not quite right, an issue buried long ago that has now bitten me on the bum.
So, am going to take this opportunity to (almost) start again, I've been able to re-import restore areas, such as OpenVPN (although I need to add new user certificates ).
Oh well. Thanks all for your kind help!
Ian