Army Personnel Centre
The APC holds personnel service records from post First World War up to the present day. Second World War records are still confidential and access is restricted to next of kin, and some information such as medical records or courts martial details will not be released.  

The National Archive
The National Archive (previously the Public Record Office) holds a wealth of archival material relating to the Army. Unfortunately about a third of the First World War Service records were lost during a Second World War air raid and many of the remaining were damaged. Copies of the existent records can be found in the PRO, details below. They publish a number of excellent readers' guides which give details of what they have and how to access and use it. These give far more detailed information than it is possible to give here. If you are not able to visit yourself it is possible to use a paid researcher. The PRO has a list of such people.   If you are visiting yourself you will need some identification to obtain a readers' ticket.

War Graves Commission
Will provide details from computerised records of basic information of those buried in IWGC graves, or on IWGC memorials. You can now visit their web site and look up names for yourself.

Ministry of Defence
For information on medal entitlement and claims only. They do not act as a historical research centre.

Norfolk Record Office
There are some records for the Norfolk Militia and Volunteers and various miscellaneous documents relating to local soldiers during the war years.

Norfolk Heritage Centre
There is a good collection of First World War portrait photographs of Norfolk servicemen