Really annoying brake ,squeak

[pug306driver]

so everything looks ok ( split caliper piston boot means an overhaul dude......split lets in water and etc etc etc ......)

and pads chamfered ( remove the sharp edge that contacts the disc ) .........

so, when driving and noise heard.....gently ( maker sure its safe to do this on the road )  very gently weave from side to side......if noise disappears when weaving left, then check r/h/s front wheel bearing......also rear wheel bearing......... as that side is now being "loaded"      ........wheel and disc "leans" and contacts pads........?

have you seen the tube and handle wheel bearing play etc. checking tool.......a bit of scaffold tube and a lever..........drive tyre onto tube with lever set at an convienient angle, hold in place ( assistant in car ) and "rotate" lever..........feel, watch disc and or b/b/joint etc........