Good to hear from you Indust, its been a while..
Wiltshire appeared to stop repairing SOX lanterns back in
May 2017. Lumas were used as casual replacements. There had been some early model Axias before then. Vmaxs were also used for some new schemes in Salisbury. SOX relamps were still taking place.
By 2019 SOX lamps were exhausted and LED retrofits started using Venture LED retrofits.
Their reliability isn't great in leaky Beta 5s were the bowl gaskets have long gone.
That lasted until around 6 months ago when Axia 3s started being used for even re-lamps of failed SOX lanterns, usually with the bracket removed and the lantern mounted post top.
Not sure what has happened with the mass LED replacement scheme. Chippenham should have been first and Salisbury was due before the end of 2019. No sign of it yet.