Where to Buy One Shot Drain Cleaner in the UK
Last updated: September 2026
One Shot Instant Drain Cleaner has been sold in the UK for over 43 years, and you’ll find the familiar yellow-boxed 1 litre bottle stocked by builders’ merchants, janitorial suppliers, online marketplaces and independent shops across the country. Availability and pricing vary a lot between them — this page explains what to check, wherever you choose to buy.
The usual places to find it
- Builders’ and plumbers’ merchants — often stock it at trade counters; some branches are collection-only for this product.
- Janitorial and cleaning suppliers — usually aimed at commercial accounts, sometimes by the case rather than the bottle.
- Online marketplaces — listings come and go, and sellers and stock levels change frequently.
- Direct from a stockist online — like this site, delivered to your door by Royal Mail.
Five things to check before you press Buy
Headline prices for One Shot vary more than almost any product we know — but the delivered price is what you actually pay. Wherever you shop, check:
- Is the price shown including VAT? Trade-focused sites often lead with the ex-VAT figure; 20% lands at the till.
- What does delivery cost? A heavy, regulated liquid isn’t cheap to post — delivery charges are often revealed only at checkout, and free-delivery thresholds can sit far above a single bottle.
- Is there a minimum order? Some suppliers only sell packs of three, six or full cases of twelve.
- Can it actually be delivered? Certain merchants list it as collection-only, or deliver only to business addresses.
- Is it in stock and genuine? Look for the One Shot brand name and the yellow 1 litre carton.
Buying direct from us
£14.99 a bottle, delivered — the price you see is the price you pay
Royal Mail 24 Tracked included · no minimum order · no account needed · bulk prices down to £10 a bottle. UK EPP-regulated product, 18+.
Check today’s price →Common questions
Is there a One Shot shop near me? One Shot doesn’t run its own shops — it’s sold through stockists. If your local merchant doesn’t hold it, delivered next-day post is usually quicker than ringing around.
Is it all the same product? Genuine One Shot Instant Drain Cleaner is the same 1 litre professional formula wherever you buy it — what differs is the total price and whether it can reach your address.
How do I use it once it arrives? See our step-by-step guide: How to use One Shot Drain Cleaner, and for choosing the right approach to a blockage, how to clear a blocked drain or One Shot vs caustic soda.