From their website:
How long does it take to get a UK visa?
We aim to operate a fast and effective visa service. Last year, over 90% of straightforward, non-settlement applications were resolved within 24 hours. If an interview is required, we aim to process non-settlement applications within 15 working days. If you are applying to settle in the UK, in most cases we aim to process your application within 12 weeks
How long does it take to get a UK visa?
We aim to operate a fast and effective visa service. Last year, over 90% of straightforward, non-settlement applications were resolved within 24 hours. If an interview is required, we aim to process non-settlement applications within 15 working days. If you are applying to settle in the UK, in most cases we aim to process your application within 12 weeks