In a fairer world, this category wouldn’t merit a mention. But if you have to pull a late one, you might as well make sure you’ve something good to eat. Our pick: the beef barbacoa burrito from Tortilla, which has multiple branches open until 9pm. Not only is the meat good quality – grass-fed, British beef – but the coriander rice and black beans will ensure a steady release of energy so you’re at less risk of zoning out mid-spreadsheet. Go heavy on the grilled veg, salsa, pickled onions and jalapeños, while holding the cheese, cream and guac, and it comes in at a light 600 cals. Or go all-in. You’ve earned it, after all.

Cals 600 / Protein 34g / Fibre 11g