Welcome ImissBMIRewards to Flyertalk and to the British Airways board. Thanks for taking the plunge out of lurkerdom and it would be really good if we see plenty more of you here. I don't think you're the only DC mourner here either.

I can't add much other than to confirm that this is quite normal and common for fares originating outside London, we sometime see something similar (in fare buckets) for flights starting from other parts of the UK, though the cost benefit isn't so brilliant compared to mainland Europe.