A bollard apparatus for use as a fixed vehicle barrier including a bollard member having a base end and a foundation assembly adapted for fixed ground engagement. The foundation assembly comprises a housing part dimensioned and arranged for retaining the base end of the bollard member together with cementing material for cementing the bollard member to the foundation assembly within the housing part. The inclination of the bollard member relative to the foundation assembly is adjustable while the cementing material is not set (e.g. cured or hardened or rigid) and is fixed upon the cementing material becoming set thereby to cement the inclination of the bollard member relative to the foundation assembly.