### Clue: Get rich female at Tesco's headquarters (6)
### Answer: FATTEN 
 ### Explanation: Definition: Get rich
 F(abbrev. for "female") + AT +**the 1st letter of**(…'s head) "Tesco" + E,N(abbrev. for "east", "north" respectively, 2 of the 4 quarters;the major points of the compass).