Claire, Now (at least in theory) Lawyers cannot be behind an SL.
The new proffesional limited companies (SLP) are specially designed for professionals that want to join and get together via the company structure.
This does not limit the responsibility as by Law the Lawyers under these Professional companies share personal responsibility with the company (i.e. are personally liable).
And Lawyers (as well as other professionals) that get together have to become a SLP, and if they were a SL, they have now to convert to a SLP.