I have investigated a bit further, and it appears later series and 110 landrovers had a welded in strengthener and captive nut for the top mounting which gives a much ‘cleaner’ look. I bought a pair of b posts which were rotted at the bottom with good strengtheners and nuts at the top. I’ve cut them out and will install them in my b posts while I am doing the bottom repairs. That way I don’t need to buy brackets etc and it looks more factory fit. I will take some photos.