Thanks for getting back to us JC1
We weren't able to source the original Peugeot part (part No: 9674196180) despite placing orders through a couple of Peugeot dealers. Delivery forecast remains the same throughout the UK, i.e. UNKNOWN.
However, after a few days searching online we did find another sensor which some sites listed as a suitable alternative. We took the chance and it turns out it is exactly the same shape, length and spec and fitted like a glove! Fault light now extinguished, thank God!
For those interested, the part number is 4545LO, we bought ours on ebay uk here:
NEW Citroën C4 DS4 Peugeot 307 308 408 Rear Left Right ABS Speed Sensor...
Be aware though, the add states 1st class parcel post but it is actually sent 2nd class and takes longer to arrive than their add states. Plus we received zero comms when we asked why it hadn't arrived. BUT, the part is new and functions as it should.
The original part looks like this and will need the extended 10mm allen key as beaks showed in his image on the previous page. Fitting is a doddle as long as you have a little mechanical knowledge.