The source code

    /**
     * List compiled by mystix on the extjs.com forums.
     * Thank you Mystix!
     *
     * English (UK) Translations
     * updated to 2.2 by Condor (8 Aug 2008)
     */

    Ext.UpdateManager.defaults.indicatorText = 'Loading...';

    if(Ext.DataView){
      Ext.DataView.prototype.emptyText = "";
    }

    if(Ext.grid.GridPanel){
      Ext.grid.GridPanel.prototype.ddText = "{0} selected row{1}";
    }

    if(Ext.LoadMask){
      Ext.LoadMask.prototype.msg = "Loading...";
    }

    Date.monthNames = [
      "January",
      "February",
      "March",
      "April",
      "May",
      "June",
      "July",
      "August",
      "September",
      "October",
      "November",
      "December"
    ];

    Date.getShortMonthName = function(month) {
      return Date.monthNames[month].substring(0, 3);
    };

    Date.monthNumbers = {
      Jan : 0,
      Feb : 1,
      Mar : 2,
      Apr : 3,
      May : 4,
      Jun : 5,
      Jul : 6,
      Aug : 7,
      Sep : 8,
      Oct : 9,
      Nov : 10,
      Dec : 11
    };

    Date.getMonthNumber = function(name) {
      return Date.monthNumbers[name.substring(0, 1).toUpperCase() + name.substring(1, 3).toLowerCase()];
    };

    Date.dayNames = [
      "Sunday",
      "Monday",
      "Tuesday",
      "Wednesday",
      "Thursday",
      "Friday",
      "Saturday"
    ];

    Date.getShortDayName = function(day) {
      return Date.dayNames[day].substring(0, 3);
    };

    Date.parseCodes.S.s = "(?:st|nd|rd|th)";

    if(Ext.MessageBox){
      Ext.MessageBox.buttonText = {
        ok     : "OK",
        cancel : "Cancel",
        yes    : "Yes",
        no     : "No"
      };
    }

    if(Ext.util.Format){
      Ext.util.Format.date = function(v, format){
        if(!v) return "";
        if(!(v instanceof Date)) v = new Date(Date.parse(v));
        return v.dateFormat(format || "d/m/Y");
      };
    }

    if(Ext.DatePicker){
      Ext.apply(Ext.DatePicker.prototype, {
        todayText         : "Today",
        minText           : "This date is before the minimum date",
        maxText           : "This date is after the maximum date",
        disabledDaysText  : "",
        disabledDatesText : "",
        monthNames        : Date.monthNames,
        dayNames          : Date.dayNames,
        nextText          : 'Next Month (Control+Right)',
        prevText          : 'Previous Month (Control+Left)',
        monthYearText     : 'Choose a month (Control+Up/Down to move years)',
        todayTip          : "{0} (Spacebar)",
        format            : "d/m/Y",
        okText            : " OK ",
        cancelText        : "Cancel",
        startDay          : 0
      });
    }

    if(Ext.PagingToolbar){
      Ext.apply(Ext.PagingToolbar.prototype, {
        beforePageText : "Page",
        afterPageText  : "of {0}",
        firstText      : "First Page",
        prevText       : "Previous Page",
        nextText       : "Next Page",
        lastText       : "Last Page",
        refreshText    : "Refresh",
        displayMsg     : "Displaying {0} - {1} of {2}",
        emptyMsg       : 'No data to display'
      });
    }

    if(Ext.form.Field){
      Ext.form.Field.prototype.invalidText = "The value in this field is invalid";
    }

    if(Ext.form.TextField){
      Ext.apply(Ext.form.TextField.prototype, {
        minLengthText : "The minimum length for this field is {0}",
        maxLengthText : "The maximum length for this field is {0}",
        blankText     : "This field is required",
        regexText     : "",
        emptyText     : null
      });
    }

    if(Ext.form.NumberField){
      Ext.apply(Ext.form.NumberField.prototype, {
        decimalSeparator : ".",
        decimalPrecision : 2,
        minText : "The minimum value for this field is {0}",
        maxText : "The maximum value for this field is {0}",
        nanText : "{0} is not a valid number"
      });
    }

    if(Ext.form.DateField){
      Ext.apply(Ext.form.DateField.prototype, {
        disabledDaysText  : "Disabled",
        disabledDatesText : "Disabled",
        minText           : "The date in this field must be after {0}",
        maxText           : "The date in this field must be before {0}",
        invalidText       : "{0} is not a valid date - it must be in the format {1}",
        format            : "d/m/y",
        altFormats        : "d/m/Y|d/m/y|d-m-y|d-m-Y|d/m|d-m|dm|dmy|dmY|d|Y-m-d"
      });
    }

    if(Ext.form.ComboBox){
      Ext.apply(Ext.form.ComboBox.prototype, {
        loadingText       : "Loading...",
        valueNotFoundText : undefined
      });
    }

    if(Ext.form.VTypes){
      Ext.apply(Ext.form.VTypes, {
        emailText    : 'This field should be an e-mail address in the format "user@example.com"',
        urlText      : 'This field should be a URL in the format "http:/'+'/www.example.com"',
        alphaText    : 'This field should only contain letters and _',
        alphanumText : 'This field should only contain letters, numbers and _'
      });
    }

    if(Ext.form.HtmlEditor){
      Ext.apply(Ext.form.HtmlEditor.prototype, {
        createLinkText : 'Please enter the URL for the link:',
        buttonTips : {
          bold : {
            title: 'Bold (Ctrl+B)',
            text: 'Make the selected text bold.',
            cls: 'x-html-editor-tip'
          },
          italic : {
            title: 'Italic (Ctrl+I)',
            text: 'Make the selected text italic.',
            cls: 'x-html-editor-tip'
          },
          underline : {
            title: 'Underline (Ctrl+U)',
            text: 'Underline the selected text.',
            cls: 'x-html-editor-tip'
          },
          increasefontsize : {
            title: 'Grow Text',
            text: 'Increase the font size.',
            cls: 'x-html-editor-tip'
          },
          decreasefontsize : {
            title: 'Shrink Text',
            text: 'Decrease the font size.',
            cls: 'x-html-editor-tip'
          },
          backcolor : {
            title: 'Text Highlight Color',
            text: 'Change the background color of the selected text.',
            cls: 'x-html-editor-tip'
          },
          forecolor : {
            title: 'Font Color',
            text: 'Change the color of the selected text.',
            cls: 'x-html-editor-tip'
          },
          justifyleft : {
            title: 'Align Text Left',
            text: 'Align text to the left.',
            cls: 'x-html-editor-tip'
          },
          justifycenter : {
            title: 'Center Text',
            text: 'Center text in the editor.',
            cls: 'x-html-editor-tip'
          },
          justifyright : {
            title: 'Align Text Right',
            text: 'Align text to the right.',
            cls: 'x-html-editor-tip'
          },
          insertunorderedlist : {
            title: 'Bullet List',
            text: 'Start a bulleted list.',
            cls: 'x-html-editor-tip'
          },
          insertorderedlist : {
            title: 'Numbered List',
            text: 'Start a numbered list.',
            cls: 'x-html-editor-tip'
          },
          createlink : {
            title: 'Hyperlink',
            text: 'Make the selected text a hyperlink.',
            cls: 'x-html-editor-tip'
          },
          sourceedit : {
            title: 'Source Edit',
            text: 'Switch to source editing mode.',
            cls: 'x-html-editor-tip'
          }
        }
      });
    }

    if(Ext.grid.GridView){
      Ext.apply(Ext.grid.GridView.prototype, {
        sortAscText  : "Sort Ascending",
        sortDescText : "Sort Descending",
        columnsText  : "Columns"
      });
    }

    if(Ext.grid.GroupingView){
      Ext.apply(Ext.grid.GroupingView.prototype, {
        emptyGroupText : '(None)',
        groupByText    : 'Group By This Field',
        showGroupsText : 'Show in Groups'
      });
    }

    if(Ext.grid.PropertyColumnModel){
      Ext.apply(Ext.grid.PropertyColumnModel.prototype, {
        nameText   : "Name",
        valueText  : "Value",
        dateFormat : "j/m/Y"
      });
    }

    if(Ext.layout.BorderLayout && Ext.layout.BorderLayout.SplitRegion){
      Ext.apply(Ext.layout.BorderLayout.SplitRegion.prototype, {
        splitTip            : "Drag to resize.",
        collapsibleSplitTip : "Drag to resize. Double click to hide."
      });
    }

    if(Ext.form.TimeField){
      Ext.apply(Ext.form.TimeField.prototype, {
        minText : "The time in this field must be equal to or after {0}",
        maxText : "The time in this field must be equal to or before {0}",
        invalidText : "{0} is not a valid time",
        format : "g:i A",
        altFormats : "g:ia|g:iA|g:i a|g:i A|h:i|g:i|H:i|ga|ha|gA|h a|g a|g A|gi|hi|gia|hia|g|H"
      });
    }

    if(Ext.form.CheckboxGroup){
      Ext.apply(Ext.form.CheckboxGroup.prototype, {
        blankText : "You must select at least one item in this group"
      });
    }

    if(Ext.form.RadioGroup){
      Ext.apply(Ext.form.RadioGroup.prototype, {
        blankText : "You must select one item in this group"
      });
    }