Wall supporting roof?

[FairDoos]

Hello,

Just planning out what im going to do with the loft and I'm stumped to what these walls are? Are they some sort of support for the beam? Its a foundation wall that is on all floors.

(To the left of the picture)

Can this be removed it I were to get a builder to do an loft conversion?

Thanks in advance!

 

[b21playa]

Looks like it has been added afterwards to add support to purlin.

If you were to do a loft conversion, you would normally add some steel beams, which can be used to support the purlin

 

[tony1851]

Why would you want to remove the support to the purlin?

You could replace the block and brick with a neat 4"x4" timber prop going down on to the wall below, but attempting to remove or relocate the purlin itself would give you no additional useable space.