Once your application has been assessed and accepted, you will progress to Phase II of the selection process. Phase II consists of a series of questions that you will be required to answer within a given time. If successful you will progress to Phase III which is an assessment day at a venue (soon to be confirmed) in London, UK, which includes the following tests:
By this they do not mean an hour or two. They normally give you a few days to respond. So do take your time, but get it done.