One place in St Nicholas Market I have not been to for ages is the Olive Grove salad bar. They do a lovely salad and tapas box which you can have either just as, or with lamb kofte, grilled chicken or halloumi.
I really like the choice of salads and tapas they have. Pulse power comprises a mix of pulses. They usually have a pasta salad and a potato salad. Should say that the potato salad is not your usual mayonnaise covered potatoes, this has none of that! They are very tasty as a result. I like the Greek salad they have too.They have a choice of different kinds of olives, stuffed vine leaves.
Overall if you are looking for salad I think Olive Grove is a great place to go for.