Part two PROCEEDINGS IN GENERAL
II. PROCEEDINGS IN CRIMINAL CASES
Chapter 21 The Suspect and his Defence
Section 3
In preparing and conducting his defence, the suspect may be assisted by defence counsel.
The defence counsel is designated by the suspect. If the suspect is under eighteen years of age or suffers from a serious mental disturbance, the defence counsel is appointed by the person who has the custody of him. If the suspect has appointed an attorney, that attorney is regarded as defence counsel.
A person may not serve as defence counsel if he has, or has had, a professional or financial relationship with the suspect and the circumstances are likely to cast doubt on his ability to fulfil the responsibilities applicable to a defence counsel under with Section 7, paragraph 1. Foreign nationals or a person who is resident outside the Realm may not act as defence counsel if this is inappropriate having regard to the security of the Realm. The provisions of Chapter 12, Sections 2 through 5 and Section 6, paragraph 2, shall otherwise apply to defence counsel. (SFS 1992:1511)
Rights during trial - counsel of accused's choosing
EDIT.