no idea what the noice (coming from the rear left hand side of the car) is but its annoying enought to make me cause a pile up

the noise is kinda like a ticking noise and onle use to happen at low speeds 5-10kmh and at idle now it seems to happen at higher speeds and just under 2000rpm dont know wherwe to start at first i thought it was my exhaust knocking on something. replaced all the rubbers and still ####ing there please help me haha