uk bug out, how long would you last ???

[Mosstrooper]

I`ve done a 5 day stint in the woods (end of August)
First three days I had all my gear and ate once a day, cooking on an open fire with billy cans.
The last days were spent with nothing but a knife, fire steel and the clothes I was wearing, no food but I did have water.
I had to make a shelter, get a fire going and forage for food. The shelter and fire was the easy bit apart from burning down my wooden heat shield! The shelter was surprisingly warm, comfy and dry as it rained overnight I wasn’t expecting to stay dry !
The foraging was the hardest for me as knowing what you can and can’t eat was a real struggle , If I had to do this past 2 or 3 days I’d reckon I would really struggle.
Depending on what resources I had (food, water, shelter) to hand i.e. in my pack would depend on hold long I could last. I reckon 72hrs with my kit.
So how long would I last, honestly I don’t know ?