The source of all information related to veterans' affairs is the Veterans Agency.

The telephone enquiry line is (+44) 1253 866043 or

you can write to them at:
Service Personnel and Veterans Agency
Norcross
Thornton Cleveleys
Lancashire FY5 3WP
United Kingdom

Alternatively you can email veterans.help@spva.gsi.gov.uk

In your email, please put the relevant issue in the subject line, for example:

War Disablement Pension (WDP)
War Widows or Widowers Pension (WWP)
Armed Forces Compensation Scheme (AFCS)
Service Records
Medals
Service Pension
Veterans Lapel Badge