Collet Clip Blue W4 31292. They are also coloured Blue to denote the cold water to help with identification of the pipe run.
eBay
Stainless Steel Straight Pipe Connection 2 Way Pipe Connector Pipe Fittings Clothesline Shelf joints Tube Connector Fittings
Aliexpress UK
The product is a set of 10 John Guest Speedfit 10mm end plugs, specifically designed for Speedfit systems. These round plastic plugs have a 10mm interior diameter and are corrosion-resistant, smell-proof, and rust-resistant. Manufactured in the United Kingdom, they come in a pack of 10, weighing 50g each. Ideal for plumbing and fixture installations, these white end plugs are a reliable and durable solution for secure and efficient connections in various plumbing systems.
eBay
Quick Connect Set Gardening Faucet Connection 4 Water Pipe Fittings Extension Butt Combination Water Pipe Fittings
Aliexpress UK
12mmx 12mm x 12mm Push Fit Genuine John Guest Divider Connector. John Guest push-fit connection fits to 12mm O/Dia semi-rigid water pipe. ITEM NUMBER: 174696820213.
eBay
Fit 1/4 OD Tubing Hose Quick Connection Pipe Control Fittings Plastic Water Purifier RO System Aquarium Fittings
Aliexpress UK
The John Guest Speedfit Reducing Tee is a set of two corrosion-resistant tees made from plastic.
eBay
Brass Pipe Fitting 1/8" 1/4" 3/8" 1/2" 3/4" BSP Female Thread Hex Coupling Coupler Connector Copper Pipe Fitting Hose Adapter
Aliexpress UK
All John Guest fittings are manufactured and assembled in the UK. Suitable for foodstuff, potable liquid, inert gases, air, pneumatic and vacuum applications. For sale is 3 x John Guest 15mm - 12mm Stem Reducer Push Fit Pipe Water Connector WS1215 JG.
eBay
10pcs Pneumatic Fittings 5.5mm/3.5mm/1.5mm Air Pneumatic Connect Hose to M3 M4 M5M6 Male Mini Barb Fitting PC4-M5 Copper Plating
Aliexpress UK
For sale is John Guest 12mm Equal T Tee Push Fit Pipe Water Fitting Connector Caravan WS1202. 1 x John Guest 12mm Equal T Tee Push Fit Pipe Water Fitting Connector Caravan WS1202.
eBay
10Pcs Pneumatic Fittings Quick Connector Plastic Elbow Pipe PV 4mm 6mm 8mm 10mm 12mm Air Hose Fitting Push Into PV Connector
Aliexpress UK
For sale is 10 x John Guest 12mm Straight Push Fit Pipe Water Fitting Connector WS1204 PM0412E JG PLS.
eBay
10PCS Pneumatic Air Connector Fitting PC 4mm 6mm 8mm 10mm 12mm Thread 1/8" 1/4" 3/8" 1/2" Hose Fittings Pipe Quick Connectors
Aliexpress UK
All John Guest fittings are manufactured and assembled in the UK. Suitable for foodstuff, potable liquid, inert gases, air, pneumatic and vacuum applications. For sale is 4 x John Guest 12mm Straight Push Fit Pipe Water Fitting Connector.
eBay
Pneumatic Air Connector Fitting PC PCF/PL/PLF 4mm 6mm 8mm Thread 1/8 1/4 3/8 1/2 Hose Fittings Pipe Quick Connectors
Aliexpress UK