Your post made me want to look into that matter more closely.

We have several answers for the question about his income but I'll add a quote from "Edwardian England: A Guide to Everyday Life, 1900-1914" by Evangeline Holland to the collection.

With an average wage of £35-50 per year, the valet attended exclusively to the personal accommodation of his master. He waited upon him during all times of dressing and undressing; brushes, folds up his clothes, or places them in readiness for him. He saw to all repairs and put away clothes in a wardrobe when not in use, making sure to cover them with brown holland or linen wrappers to secure them from dust. Boots and shoes were cleaned by the under-footman, but each morning the valet placed them in the dressing-room for his master. While the housemaid cleaned the grate, lit the fire, and swept and dusted the room, he prepared the washing-table, arranged the shaving apparatus, and laid his master's clothing out for the day.