mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB English (Great Britain) mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: English (Great Britain) language pack for firefox. mozilla-firefox-l10n-en-GB: Use this package if you want to run mozilla firefox in mozilla-firefox-l10n-en-GB: English (Great Britain). mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: mozilla-firefox-l10n-en-GB: