Technician is in tartan, concealing head (7)
I believe the answer is:
artisan
'technician' is the definition.
(I've seen this before)
'is in tartan concealing head' is the wordplay.
I cannot quite see how this works, but
'is' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for artisan that I've seen before include "Skilled worker by hand" , "Tsarina (anag.)" , "Crafty sort" , "Sinatra (anag) -- skilled manual worker" , "Journeyman" .)