I have experimented with my forks to try and work out if they are bent, turns out they arent read on to help me out, so i put the wheel in the forks, tighted up fairly tight, and spun the wheel in the correct direction and slammed the brakes on, now the caliper was centre to the disc, but after doing this it was no longer centre.
Now it didnt move the wheel up or down, but rather it slid forward or backwards in the dropout and undoing the QR it flicked back, and you can move the whole wheel in the dropout back and forth and twist it, suggesting that instead of bent forks, the wheel/axle is slipping in the dropouts, depending on direction braking force, and any jumps will reset it or make it worse. Also resetting the wheel multiple times resulted in the disc either being inline or out by a margin. Wall of text im sorry for, but im trying to describe it the best i can do.