Kira Mei is a certified personal trainer and nutrition coach helping UK adults over 40 get fit, eat well, and build sustainable habits.
The fitness internet will happily sell you a £40 set of "premium" leak-proof meal prep boxes, and they are almost entirely a waste of money. In the UK you can kit out a full week of meal prep for under £8 — sometimes for free, by washing out takeaway tubs — and the food keeps exactly as well. Containers are the one bit of meal-prep gear where the markup is pure marketing: a £4 branded box and a 50p Tesco one do the identical job of holding chicken and rice in a fridge. What actually matters is fit-for-purpose basics — microwave-safe, freezer-safe, stackable, and the right portion size — not branding. Reusing containers also cuts the throwaway plastic that WRAP, the UK's food-waste and resources authority, flags as a household problem. Here's where to buy meal prep containers across the UK, what each shop charges, which to avoid, and how to spend almost nothing getting set up.
The cheapest place to buy meal prep containers in the UK is your supermarket or value retailer: Aldi and Lidl sell reusable boxes from around 50p–£1 each in middle-aisle deals, IKEA's 365+ range and Wilko or B&M sets run £4–£8 for multipacks, and washed-out takeaway tubs cost nothing. All hold cooked meals safely for the three-to-four-day fridge window.
Where to Buy Meal Prep Containers Cheaply in the UK
The cheapest meal prep containers in the UK come from supermarkets and value retailers — Aldi, Lidl, Tesco, IKEA, Wilko and B&M — at 50p to £1 a box, undercutting branded "fitness" sets by three to four times for identical performance.
You do not need a specialist brand. Every cooked-meal storage job is handled by a plain microwave- and freezer-safe box, and those are sold everywhere for pennies.
Supermarkets and middle aisles
Aldi and Lidl regularly run reusable container multipacks through their middle aisles at around 50p–£1 a box, and Tesco's own-brand food storage sits in the same bracket. Money Saving Expert's cheap supermarket food guide makes the same point about own-brand value here as it does on food: you're paying for plastic, not a logo. The middle-aisle deals come and go, so when you spot a five-box pack at a pound, grab it — it's the same moulded polypropylene as the branded sets at a fraction of the cost. Tesco, Asda and Sainsbury's all stock own-brand food storage year-round if you'd rather not wait for a special buy, typically £2–£4 for a multipack of microwave- and freezer-safe boxes.
IKEA, Wilko and B&M
IKEA's 365+ range is the value pick for durability — glass and plastic boxes from a few pounds each that survive years of dishwasher cycles. Wilko and B&M sell plastic multipacks at £4–£8 for five to ten boxes, the cheapest way to buy a matching, stackable set in one go. The case for spending the extra pound or two on IKEA is longevity: a 365+ box outlasts a decade of cheap tubs that crack and stain, so the cost per use rounds to nothing. B&M and Home Bargains are the place to look for the largest plastic multipacks if you want ten matching boxes for under a tenner, while Poundland covers the absolute basics if you only need a couple to start.
Worth knowing the rough price ladder before you shop, so you buy at the right rung. Poundland and the supermarket middle aisles sit at the bottom — 50p to £1 a box, fine for getting started but rarely a matching set. Wilko, B&M and Home Bargains occupy the middle — £4–£8 for a stackable multipack that all nests together, which is the sweet spot for most people. IKEA's 365+ is the top of the budget bracket at a few pounds per box, justified only by how long it lasts. Above that you reach the £30-plus "fitness" sets, which add nothing but branding. The honest recommendation is to spend a fiver at Wilko or B&M for a matching set of five to seven, top it up with a couple of reused jars, and ignore everything pricier. The food keeps identically whichever rung you buy from; the only difference is how neatly the boxes stack and how many years they last.
What Actually Matters in a Meal Prep Container
The only features that matter in a UK meal prep container are microwave-safe, freezer-safe, leak-resistant and stackable — everything else is marketing, and a 50p box meets all four as well as a £4 one.
Spending more rarely buys better food storage. It buys nicer-looking plastic, which is irrelevant once the box is in a backpack or a fridge drawer.
The four features worth checking
Check the base symbols for microwave and freezer safety, a lid that seals enough to survive a bag, and a flat shape that stacks. The NHS food storage guidance advises refrigerating cooked food within two hours, so a container that goes hot-food-to-fridge-to-microwave without a transfer is the practical win. Rectangular boxes stack and tessellate in a fridge far better than round ones, which matters when you're storing a week's worth. A clip-lock or screw lid earns its place for anything saucy; a loose snap-on lid is fine for dry boxes like chicken and rice but will betray you with a curry in a backpack. Beyond those four checks, extra features are mostly there to justify a higher price.
Glass versus plastic
Glass boxes (IKEA, supermarket ranges) don't stain or hold odours and reheat without warping, but cost more and weigh more for a commute. Plastic is lighter and cheaper for carrying to work. A mixed set — glass for home dinners, light plastic for work lunches — covers both for under £10. Glass is also the one to choose for anything tomato-based or curry-spiced, since cheap plastic stains orange and holds the smell however hard you scrub it. The weight trade-off is real, though: a glass box plus a lunch is a noticeable extra heft in a bag, so most people settle on plastic for the daily carry and keep glass for the fridge and freezer at home.
There's a durability angle too. Glass tolerates the dishwasher's top temperatures and years of reheating without clouding or warping, where cheap plastic gradually goes brittle, stains and eventually cracks at the lid hinge. If a box lives mostly in the kitchen, glass pays for itself over time. For the box that gets thrown in a backpack daily, though, plastic's lightness and shrug-off-a-drop toughness win — a dropped glass box on a station platform is a bad morning. The practical kit most people land on is two or three glass boxes for batch-cooked dinners that reheat at home, plus four or five light plastic ones for the commute, which together still comes in under a tenner from a mix of IKEA and a Wilko multipack.
How to Meal Prep Containers for Almost Nothing
You can start meal prepping in the UK for free by reusing takeaway tubs, large yoghurt pots and jars — all microwave- and freezer-safe versions of what shops sell, cutting both cost and household plastic waste.
The cheapest container is the one you already have. Before buying anything, look at what's heading for the recycling.
Reusing what you'd bin
Washed takeaway tubs, 1kg yoghurt pots and glass jars store overnight oats, soups and portioned dinners perfectly well. WRAP, the UK's waste and resources authority, encourages reuse to cut household plastic waste — meal prep is a natural place to do it, and it costs nothing. The sturdier takeaway tubs — the black-and-clear ones a curry house uses — are genuinely microwave- and freezer-safe and stack reasonably well, so a fortnight of takeaways quietly hands you a starter set for free. Big yoghurt and ice-cream tubs do the job for soups and overnight oats, and a few clean jam jars are ideal for dressings or portioned sauces. The only honest caveats are that they don't match, they warp a little faster than purpose-made boxes, and the lids aren't always leak-proof — so keep saucy dishes to the ones with a firm seal. For finding your meal-prep rhythm before spending a penny, though, reused tubs are the smartest possible start.
When it's worth buying a set
Once meal prep is a habit, a matching stackable set saves fridge space and lasts years, which is where a £6 Wilko or IKEA multipack earns its place. Buy once, use for years — the per-meal cost rounds to nothing.
Containers to Avoid and Common Mistakes
The containers to avoid in the UK are flimsy single-use tubs that warp in the microwave, oversized boxes that encourage over-portioning, and £30-plus "fitness" sets that perform no better than a 50p supermarket box.
Most container mistakes either cost too much upfront or quietly sabotage the portion control that meal prep is meant to give you.
Oversized boxes and portion creep
A box too big for the meal invites you to fill it, undoing the portion control. Match the container to the portion — the British Nutrition Foundation frames balanced portions as central to healthy eating, and right-sized boxes make hitting them automatic.
Cheap lids and leaks
The weak point on any budget box is the lid seal. Test one before buying a multipack of the same model, and keep wet dishes like curry to boxes with a proper clip-lock lid to avoid a leaked backpack. A simple shop-floor test: fill a sample box with water, clip the lid and tip it upside down for a few seconds. If it holds, the whole pack will; if it weeps at a corner, leave it. The other quiet mistake is mismatched sets bought piecemeal over months — none of the lids interchange, nothing stacks, and the cupboard becomes a jumble. Buying one matching multipack from the start avoids that, and pairs well with a separate box of dedicated freezer tubs for anything held beyond the four-day fridge window.
Your Budget Meal-Prep Container Starter Kit
A complete UK meal-prep container kit costs under £8 — five to seven stackable boxes from Aldi, Lidl, Wilko or IKEA — or nothing at all if you start with reused takeaway tubs and jars.
Pulling it together shows how little the gear side of meal prep actually costs once the hype is stripped out.
The under-£8 starter set
Five microwave- and freezer-safe boxes from a Wilko, B&M or supermarket multipack (£4–£8), plus a couple of reused jars for overnight oats. That covers a full week of lunches and dinners with room to stack in a normal fridge.
Spend on the food, not the boxes
The containers are the cheapest part of meal prep — the value is in the system that fills them. Kira Mei's Nutrition Blueprint gives you the macro framework, meal prep system, and UK supermarket strategy — one purchase, no subscription, no meal plan to follow forever. It's not a diet plan, it's a textbook, available at kiramei.co.uk for £49.99.
Frequently Asked Questions
Where is the cheapest place to buy meal prep containers in the UK?
Supermarkets and value retailers are cheapest. Aldi and Lidl sell reusable boxes from around 50p–£1 each in middle-aisle deals, while Wilko, B&M and IKEA offer multipacks at £4–£8. Cheaper still, washed-out takeaway tubs, large yoghurt pots and jars cost nothing and store cooked meals just as safely. Branded "fitness" sets at £30-plus perform no better than a 50p supermarket box, so there's little reason to pay the premium.
Are cheap meal prep containers microwave and freezer safe?
Most are — check the symbols moulded into the base. Supermarket and IKEA boxes are routinely rated for both microwave and freezer use, which is all you need for batch cooking. NHS food storage guidance recommends refrigerating cooked meals within two hours and reheating only once, so a container that handles hot food, the fridge and the microwave without transferring is ideal. Glass boxes tolerate heat best; lighter plastic is better for carrying to work.
How many meal prep containers do I need?
For most UK adults, five to seven stackable boxes cover a full week of lunches and dinners. If you prep 10–15 meals a week, you'll want around ten boxes plus a few freezer-safe ones for portions beyond the four-day fridge window. Starting with reused takeaway tubs lets you find your number before buying a matching set, so you don't over-purchase containers you won't use.
Is it cheaper to reuse takeaway tubs than buy containers?
Yes — reusing takeaway tubs, yoghurt pots and jars costs nothing and works just as well for most meals. WRAP encourages reuse to cut household plastic waste, and meal prep is a natural fit. The trade-off is durability and matching sizes: reused tubs warp faster and don't stack as neatly. Once meal prep is a habit, a £6 multipack of matching boxes saves fridge space and lasts years, making it worth the small spend.
What should I avoid when buying meal prep containers?
Avoid flimsy single-use tubs that warp in the microwave, oversized boxes that encourage over-portioning, and pricey "fitness" sets that cost three to four times a supermarket box for no real benefit. The British Nutrition Foundation links balanced portions to healthy eating, so a right-sized box helps more than a big one. Always test a lid's seal before buying a multipack, and keep wet dishes like curry to clip-lock boxes to avoid leaks.
Disclaimer: This article is for informational purposes only and does not constitute medical, nutritional, or professional fitness advice. Always consult a qualified healthcare professional before making changes to your diet or exercise routine.