Special Police Services

Under FOI legislation, please provide me with a breakdown of information relating to all invoices which the PSNI has sent out in the last five years for its supplying of ‘special police services’ which have been paid in full.
A. Year when the services were provided.
B. Amount of money which the invoice totalled to.
C. Name of the organisation which paid the invoice.
D. Reason why this organisation required ‘special police services’.