There are very few areas in a Solicitor's General Practice in respect of which a solicitor has a legislative monopoly. The main areas are conduct of litigation, rights of audience in the main courts, certain aspects of a conveyancing transaction and the extraction of a Grant of Representation.
These 'reserved' activities are however, currently being eroded.
For example, the eradication of Legal Aid several years ago has led to an increase in Litigants in Person (LIPs) ie individuals representing themselves in court because they cannot afford to pay for legal representatives.
This has put enormous strain on the court system, to such an extent that most Judges will now, at their discretion, accept Paralegals in court to represent their clients (subject to notice given and being satisfied as to the competence of the paralegal).