ADL never recovered from chapter 11 in 2001.
Although it aspires to be a top tier player it's a million miles away.
Having said that, ADL varies a lot by office.
The Middle East offices have plenty of work and are managing to recruit some good people (e.g. Insead MBAs) but have little in the way of organisation or basic infrastructure. Germany has some good key accounts and seems to do good work - probably closest to a top tier firm.
The UK is still in startup mode, with the exception of the energy, rail, sustainability and risk practices.