Singapore Laksa at C&R Cafe Restaurant, Rupert Court
The Singapore laksa at around £7 is a bowl brimming full of prawns, tofu puffs, fish cake and rice vermicelli. Spicy and rich with coconut milk, with a little additional chilli sauce, it made a cheap and cheerful dinner. It was washed down with a frothy teh tarik; a strong tea sweetened with condensed milk and poured at a height to create a frothy head.
Salt Beef Sandwich, Gaby's Deli, Charing Cross Road
For around £8, you get warm, juicy salt beef in caraway seed-studded bread, with a pot of mustard to slather as you see fit. The beef, sliced finely is plentiful, its richness tempered by a sweet and sour pickled gherkin. Their falafel are also well regarded, but I had eyes only for the beef.
Pho at Viet Noodle Bar, Greek Street
Viet Noodle Bar: 34 Greek Street, London W1D 5D (map)
Udon at Koya, Frith Street
Interestingly, the vegan option (mushrooms with walnut miso hot broth) is one of the most expensive at £11.50, but it will change your life. It did mine.
Avoid peak hours as there is usually a queue for this no-reservation restaurant. The queue moves quickly, though.