### Clue: Primate holding first of services in church recess (4)
### Answer: APSE 
 ### Explanation: Definition: church recess
  APE(*primate*) around(*holding*) S(initial letter,*first* *of* the word *services*).
Defn:  Semicircular recess in a church, covered with a semi-dome.  Also a semi-circular or polygonal termination of the church, covered by a flat, sloping, domed or hemispherical roof.