• Strategy Consultants: Work on the development and improvements of organisational strategy along with Senior Management in many industries.
• Human Resources or HR Consultants: Provide expertise around employment practice and people management.
• Internet Consultants: Specialists in business use of the internet and keep them self up to date with new and changed capabilities offered by the web.
• Process Consultants: Specialists in the design or improvement of operational processes and can be specific to the industry or sector.
• Public Relations or PR Consultants: Deal specifically with Public Relations matters external to the client / organisation and often engaged on a semi-permanent basis by larger organisations to provide input and guidance.
• Information Technology Consultants: Assist in many disciplines such as Computer Hardware, Software Engineering or Networks.

Some more insight on HR Consultants and how they differ from Recruitment Consultants

Human resource consultancy is an $18.4 billion industry that has emerged from management consulting and addresses human resource management tasks and decisions.

HR consultancy has a wide scope as they assist not only in attracting talented individuals, but also in developing systems to manage and reward current employees, and evaluating employee satisfaction. They can also help companies select cost-effective employee healthcare plans and benefit programs, and can offer advice on how to manage employees in a merger and acquisition situation.

However, recruitment consultancy is an employment agency which has a limited scope of finding jobs for people seeking them and finding people to fill particular jobs.