The latest  development version  of Purple Pen Software includes a facility to have different styles of text descriptions. Download it from here and install it then also download this file  by right clicking and choosing Save Target As or Save Link As. Save it under C:/ProgramFiles/PurplePen/symbols.xml ( or wherever you installed Purple Pen). Now after opening your event in Purple Pen, hold down Shift and Control together, and then click on Help. Select - Translate Description Text>Add Translation Texts, and choose English (United Kingdom) from the list.Then click OK.Your text descriptions will now be produced in a style appropriate to a UK event. Please tell Alex Finch if anything is wrong with this.