Top Paying Firms for Associates - London

There is a fair bit of info regarding analyst pay across the street in London, with not huge amounts of variation (£100k-£125k AFAIK), however I’m wondering how this changes with seniority.

Is the difference between total comp at boutiques vs BBs in London as steep as it is in the US? (Qatalyst paying $650k for AS1?!).

If current / recent associates from boutiques & BBs in London could kindly provide their total comp figures it would be helpful to gauge.