After a night in Kendal it was nice to see than most SON lamps are being swapped for metal halide ones. This seems to be an ongoing concern as older SON lamps expire and are replaced. A main road Alpha3 on a concrete column running white light does look good. Due to the number of Alpha 3s running white light it seems like they're here to stay for some more time. All the new Opalos and QSSs run white light. I have also spotted some Evolos and LED lanterns as casual replacements.I hadn't noticed LED lanterns when I was there, but it is indeed nice to see the Alpha 3s returning to white light. The rumour I have heard is that 150W CDO is used whilst the lanterns are still on either 250W or 400W gear and so the lamps don't last too long... whether this is true or not I don't know.
There's older lanterns such as P111s (rarer type with clear bowl and SOX lamp with refractor) on some side streets, P107s on a car park by the bus station and by the riverside, and rarer stuff if you know where to look...