Yes—PG Tips moved from polypropylene to plant-based PLA; the bag still uses plastic and belongs in food-waste, not home compost.
None
Plant-Based PLA
Oil-Based PP
Current Bags (PLA)
- Pyramid shape for fast infusion
- Industrial compost settings
- Look for plant-based icon
Most common
Older Heat-Sealed
- Polypropylene seam
- Snip & compost tea
- Shell to general waste
Legacy
Loose-Leaf Brew
- Metal infuser or teapot
- No bag materials
- Leaves go to compost
Zero bag
What Changed In PG Tips’ Tea Bags
For years, many UK pyramid bags used a tiny strip of polypropylene to heat-seal the paper fiber. That seal kept the bag from splitting but left a sliver of plastic that didn’t rot in soil. In 2018, PG Tips began switching the seal to a plant-based polymer made from corn starch, known as PLA, and by mid-2020 it announced a full rollout across retail boxes. Unilever’s press note confirmed the plant-based shift across boxes at the time.
This move means the bag no longer relies on fossil-fuel plastic. Still, PLA is a plastic. It behaves differently when tossed out: the right place is usually a council food-waste caddy that goes to industrial composting. Home heaps often run cool and can leave the mesh behind. UK tea trade guidance also reminds buyers that “plastic-free” isn’t the right label for PLA; it’s bio-derived but still plastic. See the UKTIA composting page for the basics.
| Bag Type | Plastic Used | Where It Should Go |
|---|---|---|
| Current PG Tips pyramid | PLA (plant-based seal or mesh) | Food-waste collection when accepted |
| Older heat-sealed stock | Polypropylene strip | Snip, compost leaves, bag to refuse |
| Loose-leaf brewed in infuser | None | Leaves to compost, rinse infuser |
If you want more context on tea packaging and materials, many readers also skim our quick note on tea bags plastic-free claims—useful when labels get fuzzy.
How To Tell Which Bag You Have
Flip the box and scan for wording such as “plant-based,” “biodegradable,” or “industrial composting.” On loose bags, the telltale signs are a silky mesh feel or a crisp paper pyramid with a neat seam. Both can be plant-based. If your box is older or from a long-standing pantry stash, assume the seam may be the older plastic and deal with it as landfill.
Quick Checks At Home
First, pinch the empty bag after brewing. If it feels papery and tears easily, it’s probably the newer style. If it feels waxy along the seam and resists tearing, it may be an older heat-sealed version. Second, look for council guidance printed on the carton; many UK boxes now show the food-waste logo.
When Your Council Doesn’t Accept Them
Rules vary. If your food-waste service excludes tea bags with PLA, slice the bag, toss the leaves into compost, and bin the shell. That keeps micro-bits out of soil while still getting the organic matter back into the heap.
Why PLA Isn’t “Plastic-Free”
PLA is made from fermenting plant sugars into lactic acid, then polymerizing it. It’s bio-derived, but it’s still a plastic with similar durability under room conditions. Industrial composting hits temperatures and chemistry that break PLA down fast. A cool garden heap can’t match that. That’s why UK trade bodies and brands avoid calling PLA tea bags plastic-free. WRAP’s UK Plastics Pact work and brand statements echo this point: the material is still plastic, even if it’s plant-based.
There’s another layer: some lab studies report that various bag materials—paper, polypropylene, nylon mesh—can shed micro- and nano-particles in hot water. The numbers vary widely by material and test method. The most practical step for drinkers who want to cut exposure is simple: brew loose-leaf in a reusable metal infuser or stick to plant-fiber bags without plastic seals when you can find them.
A Practical Disposal Workflow
Everyday Cup
After brewing, squeeze gently and cool the bag. If your council food-waste scheme accepts plant-based bags, drop the whole bag into the caddy. If not, snip and scatter the leaves in your compost and bin the empty shell.
Batch Brews For Iced Tea
Use loose-leaf in a mesh basket or stainless infuser. You’ll cut packaging waste and make cleanup faster. The used leaves are garden-gold for compost—nitrogen-rich and easy to mix with dry browns.
Benefits And Trade-Offs Of PG Tips’ Shift
Upsides You’ll Notice
- Less reliance on fossil-fuel plastics than the old heat-sealed strip.
- Clearer end-of-life path in many areas via food-waste schemes.
- No change to the classic pyramid brew strength you bought the brand for.
Trade-Offs Worth Knowing
- PLA still counts as plastic and can linger in cool home compost.
- Council rules differ; sorting can feel messy between boroughs.
- Some mixed packaging remains: soft wraps, tags, and box windows vary by SKU.
Close Variation: Plastic In PG Tips Bags — What That Means For You
Plenty of UK shoppers ask whether the current pyramid bag adds plastic to their mug. The short answer is that PG Tips moved away from oil-based plastic seals to a plant-based one. In your kitchen, that mostly affects disposal, not flavor. You’ll still get the strong, malty cup you expect; you’ll just route the bag to the right bin.
What Councils Usually Accept
Many local food-waste collections accept plant-based bags because industrial composters run hot and can break them down. Always check your local rules. When in doubt, keep the leaves for compost and bin the shell.
Simple Ways To Cut Plastic In Your Brew
Switch To Loose-Leaf For Daily Cups
A reusable infuser pays for itself fast and removes bag materials entirely. Fresh leaves often taste brighter too.
Pick Boxes Marked “Biodegradable Bag”
Among bagged options, choose cartons that clearly state plant-based bags and give disposal directions. That tiny line usually signals you’re buying the modern seam.
Mind The Outer Wraps
Some boxes include a plastic overwrap or foil sachets for freshness. Recycle the card. Put mixed-material films in the general waste unless your area runs a soft-plastics drop-off.
Common Questions, Answered Straight
Will My Tea Taste Different?
No. The seal material sits at the edge and doesn’t add flavor. If you taste paper, you’ve over-squeezed; let the bag drip instead.
Can I Call These Bags Plastic-Free?
No. PLA is still plastic. Brands and industry groups advise against that wording to keep packaging claims honest.
Can I Compost The Whole Bag At Home?
Only if your heap runs hot for long stretches. Most garden piles won’t. Snip, compost the leaves, and bin the shell.
Decision Table: What To Do With The Bag
| Situation | Action | Why It Helps |
|---|---|---|
| Food-waste caddy accepts PLA | Drop whole bag in caddy | Industrial compost reaches high heat |
| No food-waste service | Snip bag, compost leaves | Keeps plastics out of soil |
| Unsure about local rules | Check box, council site | Guidance changes by area |
Sources Behind This Guide
PG Tips publicly announced the move to plant-based bags and completed the rollout across retail boxes in 2020; see the company’s announcement linked above. UK tea industry pages explain why PLA shouldn’t be called plastic-free and why many councils route tea bags to food-waste facilities rather than garden heaps. Those two references cover the material change and the recommended disposal path without fluff.
Want a deeper dive into compost rules for different bag styles? You can skim our short note on tea bags compostable if you’re sorting different brands at home.