Not sure if schedules are hugely different although a recent '5 year/ 80,000' mile main dealer service for a 3.0 TDv6 cost £520 incl VAT and comprised front and rear Diff Oil changes:

Oil - lubricant (2 units);
Washer (2 units);
Transmission oil (2 units);
SLX ProfPowerflow C (6.1 units);
Filter - odour A;
Filter - engine
Plug - oil drain;