Secondary data is information that has been collected for a purpose other than your current research project but has some relevance and utility for your research.nternal sources include data that exists and is stored inside your organization. External data is data that is collected by other people or organizations from your organization's external environment.
Royal Mail Contact Number: 0843 504 7203 To contact a Royal Mail advisor phone 0843 504 7203 To speak to a customer service advisor at Royal Mail, phone them at local rate on 0843 504 7203 or 03457 740 740, from 8 am to 6pm Monday-Friday or 8amâ1pm on a Saturday.
The Address is:- Buckingham Palace, London. UK. SW1A 1AA. It is  between Buckingham Palace Road and Constitution Hill.   How to get there   By train: London Victoria.â¦ (National Rail Enquiries Service 08457  484950 (UK)).   By underground: Victoria, Green Park and Hyde Park Corner.   By bus: Numbers 11, 211, 239, C1 and C10 stop on Buckingham Palace  Road.