Yes, It does look very-much like the Softy-2, here:
http://www.computermuseum.org.uk/mac...n_softy_2.html
https://www.worthpoint.com/worthoped...mmer-307527523
Although the Keypad looks to be slightly-different and Dataman seemed to usually use White vacuum-formed plastic covers / casing.
So maybe an early prototype / was a rebadge sold under a different name?