Apologies
Had a leak in mine and finally tracked it down to the push plug thingies that hold the panel to the firewall, the one the wiper shafts come through.
Had a windscreen replace while I wasn't here and he must of had a job to get it off because of the silicon at each plug, he put it all together and first rain it leaked.
Re-applied the silicon and all is sealed again. Would have thought he would have done a better job as it must be common.