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"Taste of India" in London (293 - 295, High Street North, Manor Park, E12 6SL) - one of the best South Indian restaurants I've been to in London. They do have other branches, but this particular branch is the only one I've eaten at - and it's a Pure Vegetarian branch (I understand they do non-vegetarian stuff at their other branches).
The food is quality, the restaurant itself is spacious, neat, tidy, hygienic, staff are prompt, polite, and very professional.
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