Service info for that engine code on UKAT Workshop Data shows

Renew the timing belt(s) (every 125,000 miles/120 months; Timing belt renewal intervals may be subject to updates and may differ regionally)
Mandatory Parts
Timing belt
Timing belt kit
Possible Parts
Tensioner pulley, timing belt
Deflection/guide pulley, timing belt
Tensioner lever, timing belt
Tensioner, timing belt
Vibration damper, timing belt
Water pump & timing belt kit
Cover, timing belt
Pulley kit, timing belt
Tension spring, tensioner pulley (timing belt)
Timing belt

Add this repair Renew the injection pump timing chain (every 125,000 miles/120 months)

Peter