Moving gas meter less than 1 metre


We have had some building work done on a new rear extension. As part of this we have installed a external wall flush gas meter box. Can we have our meter put into this box. The meter is currently outside on the ground below the new box. Can we have the meter put into the new box. Its in the same location, just needs to be put into the box. Maybe a smart meter could be installed at the same time.