Almost, but a gentleman would have loose leaf tea in a caddy when roughing it like that.
I think I now have to put such a kit together.
Loose leaf tea (in a caddy)
Cheese (Cheddar and a potted stilton)
fresh fruit (apples, oranges...)
pots of Strawberry jam, marmalade and honeyPatum Peperium
saucisson sec or similar
hard boiled eggs (Chicken, Duck or Quail as the fancy takes me)
bottle of wine
a tea pot and tea cup (with saucer)
a setting of fine china and silverware
a toasting fork
a small pan for boiling water, cooking porridge,
alcohol stove (faster and more discrete than building a fire)
All the above contained in a case with folding legs so that it can act as a table.
Shooting stick or some form of camp stool (after all one needs to be able to sit to eat)
One shouldn't let one's standards slip just because one is not in the heart of the metropolis.