You are able to claim between 1-3x your deposit per breach.
For example if your deposit was £600 and you had one breach (one 12 month tenancy) the claim could be worth between £600 – £1,800.
If you had multiple tenancies in the same property with a £600 deposit (renewed 12 month agreement every year for three years) the claim could be worth between £1,800 – £5,400.