The complexity of the transactions undertaken by the bank and the documentation in respect thereof
The extent to which any core activities are provided by service organizations
Contingent liabilities and off-balance sheet items
Regulatory considerations
The extent of IT and other systems used by the bank
The expected assessments of inherent and control risks
The work of internal auditing
The assessment of audit risk
The assessment of materiality
Management's representations
The involvement of other auditors
The geographic spread of the bank's operations and the co-ordination of work between different audit teams
The existence of related party transactions
Going concern considerations