How long would you last?

[Ysbryd]

I could survive quite a while if I could prevent outside interference, realistically though it wouldn't be long until people started poking their noses into my business when they smelled woodsmoke or heard me working. I live in the least populated part of the least populated county in Wales (funny enough the least populated country in the UK) I can heat, cook and flush all off grid. We currently have about 12 months bulk food chosen for long shelf life and rotated out by buying new and eating the oldest stock first. (We eat a lot of rice, rice with everything because it's cheap and stores well in the original packaging further protected in 220liter food standard drums)
If people followed their instructions and stayed isolated diseases wouldn't be transmitted person to person but human nature being what it is and people being stupid and inconsiderate as they are....well, there's my rant. Btw. Bacterial spores can last for decades while virus mutate with each new contact. Plus you then get disease vectors such as biting insects or rats. The government's initial 2 week estimate in this scenario seems rather optimistic.