Concrete post would be a waste in that location, given that you already have something substantial to attach it to, and the loadings will be small enough not to worry about. You are presumably going to have to make up your own panel [or cut one down] anyway, for that gap? I am assuming you're...
Is there an exact description of how the post is rated at 10y? If it's 10y when in contact with the ground then you will be able to exceed that when bolted to a concrete spur.
J&K posted in here about how fitting a worktop after someone else has done the cabinets is usually a nightmare because they rarely manage to get them adequately square and level. Something to think about!
Prune the roots before moving them [6 months before, according to this]:
https://blog.davey.com/tree-transplanting-cutting-tree-roots-without-killing-a-tree/
I suggest doing some research on each species of tree you want to move. And budget for some replacements, if you really like them...
This "should have bolted it up" implies that if one doesn't promptly secure the worktop down when it arrives, then it's just going to spontaneously warp itself or split. That can't be right, surely?
Unless it was really quite expensive, or the warranty has so many holes in it that you could never claim, then this is a borderline scam, as you have observed.
Stick with ones that use Makita LXT batteries. At least you will then have some usable batteries + charger if the cheap tool ever dies, that you can use with a replacement tool.
I can see a rose and a fuchsia in there, and sundry other weeds. It was probably quite nice once, just needs some tidying. Fuchsia can take a good hard pruning but the time for that has probably passed this year. You can remove all the dead wood, though.
Can't even see an oak in your recent picture, so seems like you got rid of it pretty effectively?
I have a self-seeded oak in my garden that is 3 years old and it's not even a foot tall yet. You've probably got some time until it's a "monster".
Presumably they have negative phone numbers there because it's on the other side of the world?
It would be pretty unlikely to accidentally break the glass and flip the switch down, so I guess that's why it's like that.
If that's £13 for 5 then that's not too bad.
Given how random the lifetime of bulbs can be, I think an adaptor makes more sense because it's not going blow [surely...] and means that one has a much greater choice of bulbs that can be fitted.