def get_LA_GeoJson(LA_cd):
    """
    returns a link to LSOA geojson file within LA passed from https://github.com/martinjc/UK-GeoJSON/
    """
    link_base = (
        'https://raw.githubusercontent.com/martinjc/UK-GeoJSON/master/json/statistical/eng/lsoa_by_lad/'
        )
    new_link = link_base + str(LA_cd) + '.json'
    return new_link
