Changed oil, boring, did rest of service last week.
Had a bad knocking from the front right. Had a look around, checked all bolts, pryed on some things with a bar, could see no problems. Only thing was pulling on the middle of the strut made a bit of a noise so figured dead shock. Shot DW a message before going to get the oil enquiring about cost of replacement unit.
Had nothing on this evening though so took the strut out of the car and took it apart. Piston seemed to move smoothly and without any noises, no detectable play in it, seemed ok?? Ok, take the top mount bearing apart and inspect. Bearing is very tight and certainly no play in it.
Only thing to note is a small amount of play in the top spring cup bearing, but surely this won't make itself heard ever considering I'm not doing any jumps and even if I was, there's a little preload on the spring anyway.
Stumped, I threw it all back together and onto the car. Imagine my surprise when the horrible jack-hammer-esque noise was completely gone, 100%, when I hadn't even really done anything.