Pantheist are another UK experimental 'doom' band, which has (or has had) Ex-Esoteric members in it. Their latest is pretty interesting, but hardly an Esoteric beater.
Juvenile Baroque Slaughterhouse are another band that have some awesome 'avant-garde'/experimental doom stuff. A bit less like Esoteric .. More like Ved Buens Ende meets Godflesh (for a quick comparison). And i've just realised my band is in their top friends ahaha.. n'aaaaaaw.