回复：谢谢，签证一般要花多长时间？

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