Letting Agent's fee near M28

Letting agents fees in M28 vary depending on the services and rent. 
The average rent per month in M28 is £1,102. So a tenant finders fee for 60% of rent is £661. 
In M28 a full managment fee for a property is between 10% and 20% of the monthly rental value, averaging between £66 and £132.
Renewal fees in M28 are charged for renewing a tenancy agreement between the landlord and the tenant, ranging between £33 to £99.