I reread this one this year too, if you liked the the overall theme of this, then there is also a great little book by Jack London, called People of the Abyss, its a similar tale of the abject poverty in London through first hand experience from the author, which he embarked upon after he traveled to London for an interview that never materialised. He writes as an outsider in the Poverty of London and couldn't believe the hardship that so many people had to endure in the capital of the most powerful Nation on the Earth. I'd recommend it although its in a very different writing style to Orwell