These are easily accessed without tools - raise the bonnet and remove the plastic cover plate which is clipped into the dash.
The one pulled out of the 1.4 had obviously never been changed (20,000 miles); compare how dirty it is compared to the new one. The one pulled out of the 1.6 had been changed but was not the correct charcoal activated type
All three 1007's now have the activated charcoal type