Google Map / Location Field - Missing data in UK (town)

I live in the UK and in Google Maps Geocoding API if I type a location in it'll sometimes have the city / town under "postal_town" rather than "city" in the result JSON.

Because ACF doesn't map and save that piece of data I can't display towns on the front-end. It saves only postcode, address, city, place id etc at the minute but doesn't have postal_town for these addresses.

The workaround is for me to do a double API call (on saving the field re-run the call and save the town to another field, which is very bad practice and going to cost a lot) or scrap the location field all together because I can't find a way to hook in.

Is there any filter that I can add it with or is it possible to add one so we can map other data from the API results?

Example:

"BB8 8JU" returns this from ACF location field:

{
address: "BB8 8JU"
country: "United Kingdom"
country_short: "GB"
lat: 53.8455506
lng: -2.1899245
place_id: "ChIJHZKvtn-Re0gRjn92nwMlTNQ"
post_code: "BB8 8JU"
state: "England"
zoom: 14
}

You'd expect that you could retrieve the town from there at least since it's returned in the geocoding API:

"results" : [
      {
         "address_components" : [
            {
               "long_name" : "BB8 8JU",
               "short_name" : "BB8 8JU",
               "types" : [ "postal_code" ]
            },
            {
               "long_name" : "Colne",
               "short_name" : "Colne",
               "types" : [ "postal_town" ]
            },
            {
               "long_name" : "Lancashire",
               "short_name" : "Lancashire",
               "types" : [ "administrative_area_level_2", "political" ]
            },
            {
               "long_name" : "England",
               "short_name" : "England",
               "types" : [ "administrative_area_level_1", "political" ]
            },
            {
               "long_name" : "United Kingdom",
               "short_name" : "GB",
               "types" : [ "country", "political" ]
            }
         ],
         "formatted_address" : "Colne BB8 8JU, UK",

Start by tracing the ACF location field's Google Geocoding API response mapping and compare the saved fields with the returned postal_town component. Done means UK postal towns are available from the location field without a second API call, either through supported mapping or a documented filter.