Wire Connectors, 12 Pack Low Voltage Wire H tap 2 Way connectors 2 Pin solderless with no Wire-Stripping Required for Mid-Span Branching in Wires Connection 20/22 AWG Cable 0.2-0.5mm², by brightfour :
Ideal Electrical Wire Connector Set 80 Pcs - Screwfix
180Pcs Electrical Wire Connectors Screw Terminals Electrical Wire Connector Cap Wire Nuts Connectors Screw Terminals with a Box(5 Sizes) : Amazon.co.uk: DIY & Tools