ogr2ogr merge Ordnance Survey shapefiles from different subfolders together

merge_ordnance_survey.bat

@echo off

set OSGEO4W_ROOT=C:\OSGeo4W64
call "%OSGEO4W_ROOT%\bin\o4w_env.bat"

SETLOCAL ENABLEDELAYEDEXPANSION

rem set your folder which contains the shapefiles and change to this folder:

set verzeichnis=C:\YourShapefileFolder\ 

cd %verzeichnis%

rem recursive for loop 
FOR /R %%b IN (*.shp) DO (
	
	rem get filename without path
	set var=%%~nxb
	rem cut off the first three characters
	echo merging now: !var! to !var:~3! 
	
	rem merge the files together
	
	if NOT exist "!var:~3!" (ogr2ogr -f "ESRI Shapefile" "!var:~3!" "%%~fnxb") else (ogr2ogr -append -update -f "Esri Shapefile" "!var:~3!" "%%~fb" )

)

Echo -------------------------------------
Echo merging done!
Echo -------------------------------------

PAUSE