Thanks everyone,
I searched the part number for the large socket which has a Mercedes Star and Klein written on it. It came up as a truck / commercial part (part number 0005813901). Not sure if this is a for a old truck, but the tool looks pretty old.
The other spanners and grips are all Heyco brand and the screwdriver is Felo. The handle is plastic, so not the oldest and one of the 3 interchangeable parts is a Torx, so can't be too old, although they are all the darker colour, which I thought were older versions.
Anyway, an interesting mix.
Does anyone know what the hooked shaped tool is, to the right of the screwdriver parts in the main picture and also the shorter tool with the open hole (underneath the allen key)?
Cheers, Ian