Python script to move a city (or any shapefile) around. I couldn't work out how to detemine source lat lon from the shapefile (e.g. from centroid of convex hull of all the polygons).

move_city.py

from shapely.affinity import translate
from shapely.geometry import Point, MultiPolygon
from shapely.ops import transform
from functools import partial
import pyproj
import geopandas as gpd
import os


def move_city(filepath, source_latlon, destination_latlon):
    
    data = gpd.read_file(filepath)
    
    project = partial(
        pyproj.transform,
        pyproj.Proj(init='epsg:4326'),
        pyproj.Proj(init='epsg:27700'))

    origin = transform(project, Point(source_latlon[1], source_latlon[0]))
    destination = transform(project, Point(destination_latlon[1], destination_latlon[0]))

    offset_x = destination.x - origin.x
    offset_y = destination.y - origin.y
    
    data['geometry'] = data['geometry'].translate(xoff=offset_x, yoff=offset_y)

    out = os.path.join("translated", os.path.basename(filepath))
    data.to_file(out)