I'm from the UK and i'd say i'm very keen on the following:
Dystopian Wrath - Symphonic Blackened Death
Sidious - Symphonic Blackened Death
Verdelet - Orthodox Black
Primitive Graven Image - Black
Saor - Black with Scottish folk overtones
Cnoc an Tursa - Black with Scottish folk overtones
Hecate Enthroned - Symphonic Black
Ethereal - Symphonic Black
Vehement - Blackened Death
Winterfylleth - Black with folk overtones
Wodensthrone - Black with folk overtones
Fen - Atmospheric Black
The Infernal Sea - Black
Anaal Nathrakh - Blackened DeathGrind
Eastern Front - Orthodox Black
Stahlsarg - Orthodox Black
I'm missing one or two bands of course but it's mental seeing people suggest there's nothing to offer from the UKBM scene, it's ferociously strong right now and several of the bands are starting to venture to the mainland for festivals and tours.
Miika Tenkula of Sentenced, his tone seems to have influenced the tone of a high number of subsequent Finnish guitars, he did a good job of conveying a particular atmosphere or emotion into his playing and always seemed to be holding back so the guitar work fit the song not the other way around. I know and listen to plenty of other guitarists but frankly he's the one i consider the most influential on me personally.