You may have found out by now, but I have a 98 Di, which has no pollen filter, I believe only vehicles with A/C have them.
The inaccessable GLOW PLUG requires removal of F.I.Pump but Rover vehicles with L-Series engine are only fitted with 3 glow plugs from new. Sorry this message is late, haven't been online due to computer problems. (I am ex Rover/Land Rover worker.)