5 Books Found

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"this is the description of a book i want to find that i read once: family of 2 boys, a mum, stepdad or mums boyfriend, and granny. Men break in and steal from the house,maybe assault the mum, they decide to leave (may be war time) . Mum decides to stay behind with granny so its stepdad and 2 boys, they leave to a place, all sleep in tents with a massive group of people, get rations, little brother goes into forest and finds a house with a women and little boy, older brother finds him, women asks older boy to fix the bikes in the shed"