The London theme flag cml theme is only available for phones with the cm launchers EX. This theme with the cheetah launcher does not support any other launcheres systems such as halo launcher go launcher solo launcher.
It's free of charge to download the installation package of London theme flag, also, you can have a look at users' reviews on Droid Informer. The app works fine on Android 4.0 and higher. This application is completely safe to download. Mr magic 2017 has designed London theme flag that lies within the Personalization category.