preseed.cfg

d-i debian-installer/locale            string en_UK.UTF-8
d-i debian-installer/language          string en
d-i debian-installer/country           string UK
d-i localechooser/preferred-locale     en_UK

d-i clock-setup/utc                    boolean true
d-i time/zone                          string Europe/London
d-i clock-setup/ntp                    boolean true

d-i console-setup/ask_detect           boolean false
d-i keyboard-configuration/layoutcode  string sk
d-i keyboard-configuration/xkb-keymap  select sk
d-i keyboard-configuration/toggle      select Alt+Shift

d-i debconf/priority                   select critical
d-i auto-install/enabled               boolean true
d-i netcfg/choose_interface            select auto
d-i netcfg/get_hostname                string ubuntu-installer
d-i network-console/password           password ubuntu
d-i network-console/password-again     password ubuntu
d-i preseed/early_command              string anna-install network-console