Limit Google Autocomplete results to country and city

To add a location based autocomplete to text inputs using Google Autocomplete, you need to add the following code to a script block or separate JavaScript file. The country is limited to two letter country codes only, e.g. uk, us or fr, see a full list here:

https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2

function initialize() {
    var optionsT = {
        types: ['geocode'],
        componentRestrictions: {country: "uk"}
    };

    var autocompleteT = new google.maps.places.Autocomplete(document.getElementById('TarPlacename'), optionsT);
}

The above script will limit the results to anywhere in the UK, you can also limit it to just cities by adding the following to the types array.

'(cities)'