I have no reason to think this isn't a WR made gun - I don't know much about the post-war English stuff.
Recently I was able to inspect a post-war Rigby bolt gun and wasn't impressed. Like all businesses, they make what they can sell.
One thing I caution new collectors on is the common verbage when it comes to identifying a Mauser as a "square bridge". This one isn't. I would call this a scope mount rather than a square bridge.
I prefer them to standard actions, and there have been some pretty good fakes out there recently. So when buying a "restored" gun, be dubious if it doesn't look exactly right.
That said, I am not sure what kind of premium a true square bridge action commands over a standard action these days.
Judging by the wear on the barrel just in front of the front scope mount, I say the bases are not original.
The engraving on the bottom metal and floorplate look to be marginally more well executed than the rest of the gun. I have seen some guns with only the floorplate engraved - perhaps this was such a gun and a past owner had the action done to match - I don't know.
The way I see it, there may be nothing at all to knock about this gun - depends entirely on the price and how it has been represented by the seller.