I Can't Find Axis Super Sport Piezo Bridge Saddles!!!

Hi folks, I hope you can help me. I have a wonderful Axis Super Sport with the piezo pickup in the bridge saddles, part number RB027W. Unfortunately, a wire has become detached, and I cannot source a new saddle (images are attached). I am based in the UK, but I will happily buy from overseas if necessary. Can anybody help?

Many thanks in advance!