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To stop them moving to where?
As I made clear, I don't think it'd be an issue. However, if the OP wanted to, grout would eliminate any risk of movement. It'd also fix the cracked packer.
My concern is how have they got the placement of the padstones so wrong? SE design was for the steel to be sat on the padstones not 50-60mm of paving slab, slate, steel shim or whatever else they could find to use as a packer. Is there no regs as to how much you can pack up?

It just doesn't seem right to me but that's a completely unqualified opinion.

I know they aren't going to fall down the main issue now is continued movement due to a cracked packer, 1 padstone not being cemented in place and some of the RSJ ends not being tied into the brickwork. I would rather try to correct now to avoid having issues later down the line. You may have just given me the solution, mess isn't an issue due to the house being empty.
Something was mis-measured somewhere - and if in doubt put it in lower and packing up is easier than the other way round. But a padstone's actual role is to reduce stresses on the wall immediately below the padstone. Packing up doesn't affect that function.
 
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As I made clear, I don't think it'd be an issue. However, if the OP wanted to, grout would eliminate any risk of movement. It'd also fix the cracked packer.

Something was mis-measured somewhere - and if in doubt put it in lower and packing up is easier than the other way round. But a padstone's actual role is to reduce stresses on the wall immediately below the padstone. Packing up doesn't affect that function.
But it must put stresses on the packing?

Is there no regs about how high you can pack and/or the materials you should pack with?

Every pack up is different in both height and materials used
 
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But it must put stresses on the packing?

Is there no regs about how high you can pack and/or the materials you should pack with?

Every pack up is different in both height and materials used
The packers need to be either flexible (steel) or perfectly flat, otherwise the stresses induced will potentially cause them to crack (which is what seems to have happened in one place here)
Ideally the packers should have at least the same compressive strength as the pad stone, but it would be possible to calculate the actual stresses on the packers.
 
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Again, movement to where?

They are not going to move there is no risk, so it would be a complete waste of time.
Downwards, possibly off level.

Some of the packs aren't flat, grouting would be just to fill those gaps and ensure complete load transfer.

In most cases, not an issue (which as I said is my overall opinion), but there's not enough information in OP's post to say it will definitely never been an issue for the 50 year design life. We don't know the length, the thermal environment, what loading the beams carry. Big snow storm and those padstones could see a lot of additional load.
 
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Lol. That beam won't be going/ can't go downwards. Have you seen what they are sitting on? It's compressed concrete, most likely as good as that padstone needs to be.

However, even if we assume the packing is unsuitable grout won't magically increase its bearing capacity or shear strength.
 
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Lol. That beam won't be going/ can't go downwards. Have you seen what they are sitting on? It's compressed concrete, most likely as good as that padstone needs to be.

However, even if we assume the packing is unsuitable grout won't magically increase its bearing capacity or shear strength.
Even the broken one?
 
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Did it break after they laid it? Still looks like mortar between the parts in your pic.

Did they just lay it on the 2 halves and bed them in, when they ran out of packers
 
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I have no idea what they did, it was covered over very quickly.

There isn't any mortar in-between.
 
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There isn't any mortar in-between
Screenshot_20220927-210715_Chrome.jpg


I do have old eyes
 

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