Senior producer

Senior Producer is a title given usually to the second most senior person of a film of television production. Used mainly in the United Kingdom, a senior producer (who would occasionally replace a Series Producer for television drama or 'soap') would be the most senior member of production personnel underneath an Executive producer. The title is also known as a Supervising producer.

A Senior Producer oversees a particular production paying particular detail to budget, staffing and talent including casting, scripting and the legal and logistic affairs of the production(s).

...
Wikipedia