What insulation is this?

[RoyByron]

Hello all,

Looking for some advice on exactly what type of insulation this? It's in a cavity wall, exterior brick has some damage so I want to replace the lost insulation and brick it back up.
Google leads me to various blown insulation types but I'm not confident any of them look quite the same as this.

Any thoughts on where to purchase also appreciated.

Many thanks!

 

[DAZB]

Looks very similar to this stuff which is shrink wrapped into bales.

Pardon our interruption...