Boxmill consulting has been appointed by Grange Hotels to project-manage the extension to its five-star Grange City Hotel in Tower Hill, London. The hotel, which opened last November, has 240 bedrooms over 12 storeys, a sushi bar, health suite, whisky bar and driving range. Planning permission has already been granted for the seven-storey extension, which will provide an extra 70 bedrooms and a wine bar.