Pros
You receive a lot of P&L responsibility quite quickly. In the first 1-3 months it's a lot of phone work, but this is part of the training, so you can take on your own client projects as quickly as possible so it's absolutely worth it and a useful skill for future roles internal and external. If you perform well, there's no arbitrary time delay on progression. Some grads gain project management and client-facing skills and move on, and others progress to Manager/AVP/VP within 1.5-4 years. Great office location next to Spitalfields.
Cons
It takes some getting used to when you first join, as it's very fast-paced and only really strong work prevails. Some evening work on occasion, but it comes with working in financial services. A few past middle managers ill-equipped, but majority of promotions in last 2 years absolutely deserved with clear focus on people management and development.