Definitely looks like the habitat one, this one is new on ebay http://www.ebay.co.uk/itm/NYX-Black-metal-desk-lamp-Grade-B/282615596773?hash=item41cd33c6e5%3Ag%3A4vYAAOSwYVhZcdtN

Hi looks like a wenge 50mm square edged worktop that wilsonart used to make, unfortunately thats been discontinued, except wren's version is 80mm thick. if you want square edged and the extra thickness i think you'll have to get it made for you by a laminate fabricator/worktop supplier. this isn't as expensive as it sounds and they'd have a massive choice of colours from all the worktop manufacturers available and they can make it to your specification, you'll have to do a search for your nearest worktop supplier (ignore all the howdens and sheds etc). still can't see why wren wouldn't sell you the worktop though, might be worthwhile trying a different showroom, sounds like the salesperson couldn't be bothered.

Thank you but no - I did find a couple of polished brass ones - I did think I could try to matt/blacken it myself as a last resort?

I think that the one in the inspiration photo might be an electric one too. Some of these fake candles look deceptively real. The Ali Express one you might be able to order in the UK too. https://www.aliexpress.com/item/Kevin-Reilly-American-country-large-living-room-dining-room-rounded-rectangular-LED-resin-candle-chandelier-lamp/32230517943.html These lights are very popular in the US: https://www.restorationhardware.com/catalog/product/product.jsp?productId=prod2700564