I have several pieces from that range that I have picked up second hand over the last few years.
It is the ‘flagstone’ range from Barker&Stonehouse.
Made somewhere where tropical hardwood is common and imported to the UK, so may also be available from other places.
If I recall correctly, it is described as ‘mango wood’, it’s certainly a good, dense tropical hardwood with great grain/flame.
The inlays on the top are ceramic tiles, so not possible to flatten by conventional means.
If someone has then stained it, then that’s crazy. Hopefully just a top-coating/varnish and not sunk into the wood.