Chartered architect
A chartered architect in the United Kingdom is a corporate member of one or more of the following architects' professional bodies:

the Royal Institute of British Architects
the Royal Society of Ulster Architects
the Royal Incorporation of Architects in ScotlandTo become a corporate member, an architect must have passed, or gained exemption from, RIBA parts I, II and III, which includes at least two years working in practice (a minimum of seven years in total) before being able to apply.
A chartered architect in the United Kingdom is a corporate member of one or more of the following architects' professional bodies:

the Royal Institute of British Architects
the Royal Society of Ulster Architects
the Royal Incorporation of Architects in ScotlandTo become a corporate member, an architect must have passed, or gained exemption from, RIBA parts I, II and III, which includes at least two years working in practice (a minimum of seven years in total) before being able to apply.

References
External links
Royal Institute of British Architects
Royal Society of Ulster Architects
Royal Incorporation of Architects in Scotland