This is based on the Chapter 27 - Appeals from Entry Clearance Guidance
27.8 - Fresh application while an appeal is outstanding
There is nothing in law to prevent a person who has an appeal pending from making a fresh application for entry clearance in the same or any other category. There is no requirement for a person to withdraw an appeal before allowing a further application to be made. If an appellant is issued a visa to enter the United Kingdom, e.g. following ECM review, then post should follow the procedures as per 27.4.1.
