I think Allcomponents do fine wire and connectors.
Modelex do connectors.
Maplin do soldering irons, some connectors, and wire but it may not be fine or flexible enout as it is normally intended for PCB wiring.
Squires may do fine wire, and do soldering irons. i think they also do connectors.
Digitrains do connectors.
Use a small iron and get additional bits for it. I use an Antex C15, but make sure when you buy any additional bits that they fit the C15. I found out the hard way.
Modelex do connectors.
Maplin do soldering irons, some connectors, and wire but it may not be fine or flexible enout as it is normally intended for PCB wiring.
Squires may do fine wire, and do soldering irons. i think they also do connectors.
Digitrains do connectors.
Use a small iron and get additional bits for it. I use an Antex C15, but make sure when you buy any additional bits that they fit the C15. I found out the hard way.