Neutral sulphur absorption lines (UVES data). As for Fig. 4, the continuous red line correspond to the best fit model, with regions corresponding to other absorption lines marked in blue (for example, most of the profile seen in the S iλ1807 actually corresponds to Si iiλ1808, except around v = 0km s^-1). The short tick marks show the position of the singly ionised metal lines. We note that S i is detected only in the component that has CO.