JD Brands 15mm Push Fit Straight Connectors (2 Pack) | Tool-Free Pushfit Plumbing Fittings for 15mm Copper & Plastic Pipes | Easy-Fit Radiator & Water Pipe Fittings – Equal Straight Push-Fit Joint

JG Speedfit Push-Fit Union Nuts with Service Valve 15mm x 1/2" x 300mm 2 Pack - Screwfix

John Guest Speedfit PEMSTC1516 15 mm x 3/4 inch BSP Straight Tap Connector