Clinkers, specifically Cadbury Pascall Clinkers, can be bought from various online retailers and supermarkets. Some notable options include:

• London Food Hall which sells Cadbury Pascall Clinkers (160g) packs.
• Woolworths Australia online supermarket offers a 300g snack and share bag of Cadbury Pascall Clinker Milk Chocolate Lollies.
• Uber Eats provides delivery options for Cadbury Pascall Clinkers Lollies, depending on the location.
• The Australian Food Shop offers worldwide delivery for a 300g pack.
• Other online stores like Treats from Oz, LollyShop, and Gumdrop Lolly Shop also carry these sweets.

These sources provide options for both purchasing online and delivery depending on the region.