To submit a rocketry altitude record, please submit to UKRA Council, with the details that are listed on all the altitude record tables, e.g.:
Altitude (preferably in feet and metres)
Rocket Type (Kit, Modified Kit or Scratchbuilt)
Name of flyer or Team
Motor (preferably including motor designation, manufacturer, total impulse, delay, motor diameter)
Airframe diameter (preferably in inches and milimetres)
Rocket Mass (Gross Lift Off and/or Dry)
Recovery System (e.g. Tumble, Streamer or Parachute, Single stage or 2-stage)
Date (Day, month and year)
Launch Site (Name of Launch Site, Location, County, etc)
Altitude verification method (e.g. onboard altimeter/accelerometer, altimeter, accelerometer, GPS), and model and manufacturer of altitude verification system.
Obviously, the more information someone can supply, the more accuracy for the record. So it is in the interests of anyone submitting a record, to provide all the information above, and more if they have it available (such as altimeter data files).