Thank you!! 🥰Could be anything from a few days through to mid-September. You really should be given 4 weeks though as a minimum (that is best practice)
How much time you are given typically depends on what stage of your academics you are in. The mid-September rule is really for those who are still at university, while the 4 weeks (or less) will be for those who are graduating in 2022 or have already graduated. If you need to start the GDL/LPC/SQE soon then you will also find your time to consider the offer is less.