Thanks all. Feels like all the usual STW approaches have been covered, some really helpful, some much less so and some others.
The worktop still isn’t in the kitchen.
We do have a rug, but it was from John Lewis so must be ok.
We do have minimal carpet, it’s only on the stairs, as I ran out of energy at the end of the build to do anything more involved.
I will be keeping the oak worktop in the utility room.
I’ll sand it down and use the Oxalic stuff to get rid of any stubborn stains.
Then I’m going to use what is clearly to STW left field and using the suggested yacht varnish, if it’s good for million squid yachts then it’s good for enough for this.
I’ll report back with progress, as I’ve never used this before.
If it does work, I may consider using it on the side oak door that leads to this room.