You can read about the process here. According to government guidelines, Stage 1 should be completed in 2 months and Stage 2 in 4 months so a total of 6 months. According to government data, local authorities meet the target of approval within 6 months is in 30% of the cases.
We will do our best to be faster than the 6 months where possible. During Stage 1, you can help too by providing information about yourself as quickly as possible. However, some elements of the process include third parties, for example DBS checks and those can sometimes take a long time.