请问
入籍的时候需要两个介绍人，其中一个是认识五年以上的英国人，另一个写的是prefessional ,这个是只能医生，会计之类的来写，还是phd之类的博士毕业的就算呢？
可以签署的人包括:
Accountant
Airline pilot
Articled clerk of a limited company
Assurance agent of recognised company
Bank/building society official
Barrister
British Computer Society (BCS) - Professional grades which are Associate (AMBCS), Member (MBCS), Fellow (FBCS) (PN 25/2003)
Broker
Chairman/director of limited company
Chemist
Chiropodist
Christian Science practitioner
Commissioner for oaths
Councillor: local or county
Civil servant (permanent)
Dentist
Designated Premises Supervisors
Director/Manager of a VAT registered Charity
Director/Manager/Personnel Officer of a VAT registered Company
Driving instructor (approved)
Engineer (with professional qualifications)
Fire service official
Funeral director
Insurance agent (full time) of a recognised company
Journalist
Justice of the Peace
Legal secretary (members and fellows of the Institute of legal secretaries)
Local government officer
Manager/Personnel officer (of limited company)
Member of Parliament
Member of Her Majesty’s Armed Forces
Merchant Navy officer
Minister of a recognised religion
Nurse (RN, SEN or holder of a BA in nursing)
Officer of the armed services (active or retired)
Optician
Paralegal (Certified or Qualified Paralegals, and Associate Members of the Institute of Paralegals)
Person with honours (e.g. OBE, MBE etc.)
Personal Licensee Holders
Photographer (professional)
Police officer
Post Office official
President/Secretary of a recognised organisation
Salvation Army officer
Social worker
Solicitor
Surveyor
Teacher, lecturer
Trade union officer
Travel agency (qualified)
Valuers and auctioneers (fellow and associate members of the incorporated society)
Warrant officers and Chief Petty Officers