Yes strong on many SDR's but in West London there is a null and it's inaudible during the day, and at night Manx Gold on 1368kHz is stronger. It was just audible during the day on 648kHz when there was some aerial(?)maintenance a few weeks ago, currently you would not know there was a station present on 648kHz, and that has been the case forever.

Not really a problem for me, I am line of sight to the DAB site in Notting Hill. so have a solid signal.