76895 FOI Fraud

I am making this request under the Freedom of Information Act 2000. 
•    Do you have a fraud investigation department/team?
•    If you don’t have a fraud team, who investigates reported case of fraud?
•    How many fraud investigators are there in your team?
•    Can you please list the top 4 most common types of fraud you investigate?
•    Do you investigate any Covid related fraud cases – e.g. business grant, business support, business rates relief or business load fraud cases?
•    Do you release or publish any information about the number of cases you investigate per annum, the value of fraud and their outcomes?
•    How many fraud cases were investigated in 2020 and in 2021?
•    Do you use an electronic case management system to record and manage your fraud cases? If so, which case management system do you use?
•    Do you use data matching to proactively identify potential fraud cases? Which product or service do you use?
•    Do you investigate fraud on behalf of other organisations? Can you please state who?