Best Meal Prep Containers UK: Glass vs Plastic and What to Buy

Glass vs Plastic Meal Prep Containers

The choice between glass and plastic comes down to priorities: glass is more durable, does not stain or absorb odours, and is generally safer for reheating (no plastic leaching risk). Plastic is lighter, cheaper, and less likely to break if dropped.

• Glass advantages: does not stain from tomato sauce, curries, or berries; does not absorb food odours over time; microwave-safe (without the lid, in most cases); oven-safe in many cases; lasts indefinitely if not dropped; does not leach chemicals into food.
• Glass disadvantages: heavier (important if you carry containers to work); more expensive upfront; breaks if dropped; takes longer to cool after cooking.
• Plastic advantages: lightweight, cheap (£8–15 for a 5-pack), will not break if dropped; easier to take on commutes.
• Plastic disadvantages: stains permanently from tomato-based sauces; absorbs odours after repeated use; can warp in the microwave on high settings; older plastic (BPA-containing) is being replaced by BPA-free alternatives but some consumers prefer to avoid entirely.
• Verdict for long-term meal preppers: glass is almost always the better investment. A set of glass containers lasts years and provides a better eating experience. Start with plastic to test meal prep before upgrading.

What Sizes to Buy

Different container sizes suit different meal prep purposes:

• 1-litre rectangular containers (most important): the standard for a complete lunch or dinner. Should hold a protein portion (150–200 g chicken), a carb portion (150–200 g cooked rice or pasta), and a vegetable portion comfortably. Buy at least 5 — one per weekday lunch.
• 500–700 ml containers: suitable for single-component meal prep (just cooked chicken, just cooked rice) or smaller meals. Also good for soups and stews.
• 300–400 ml containers: ideal for snacks, sauces, dips, and overnight oats. A 400 ml jar with a lid works well for Greek yogurt bowls and overnight oats.
• 1.5–2 litre containers: useful for batch soups, curries, and stews that you portion throughout the week. Not needed for individual portioned meal prep.

Where to Buy Meal Prep Containers in the UK

The best value meal prep containers in the UK:

• Amazon: the widest selection and most competitive prices. Search for "glass meal prep containers 1 litre" or "glass food storage containers UK". Sets of 5 × 1-litre glass containers cost £15–25 from reputable sellers. Ikea 365+ glass containers are highly rated.
• Ikea (IKEA 365+ range): rectangular glass containers with bamboo lids, stack neatly, dishwasher and microwave safe. Available in store or online from ~£4 per container. The most popular choice among experienced UK meal preppers.
• Tesco: sells own-brand plastic meal prep containers in a 5-pack for £6–8. Good starter option. Glass versions available but pricier at £15–20 for a 5-pack.
• Wilko: excellent value plastic containers in various sizes. Check the food storage section in store.
• Home Bargains / B&M: frequently stock multipacks of plastic or basic glass containers for £5–10. Worth checking if you have one nearby.

Container Features to Look For

Airtight seal: the most important feature for keeping food fresh for 5 days. Test by filling with water and inverting — a good lid will not leak. Clip-lock lids or silicone seal rings provide the most reliable seal.

Microwave safe: essential for reheating at work. Most glass containers are microwave safe without the lid. Check the bottom of plastic containers for the microwave symbol (wavy lines). Remove metal clips or inserts before microwaving.

Stackable: particularly important for fridge storage. Rectangular containers stack far more efficiently than round ones — rectangular is always the better choice for meal prep.

Dishwasher safe: a non-negotiable for anyone doing consistent meal prep. Hand-washing 10 containers per week is time-consuming. All glass containers and most quality plastic containers are dishwasher safe.

Recommended UK Meal Prep Container Starter Set

For a complete meal prep setup: 5 × 1-litre glass rectangular containers for lunches and dinners (£20–25 from Amazon or Ikea); 5 × 400 ml glass jars with lids for overnight oats and yogurt bowls (£10–15); 3 × 600 ml containers for snacks and sides (£8–12). Total investment: £35–50. This covers all meal prep storage needs for one person for years.

If on a tight budget, start with a £8 5-pack of plastic containers from Tesco or Wilko. Once you have established the habit, upgrade to glass at your own pace.