Internal brick wall removal

[TheH]

Hi, I am looking to remove this non-loadbearing single skin brick wall between the kitchen and dinning room.
As you can see from the pictures the wall does not have any joists bearing on it.
My main concern is do I have to leave a nib on the external wall side to help support the external wall (Cavity Block/Brick wall) or can I cut it flush back to the wall?
Thankyou

 

[gh483]

I have done exactly this, the ground floor internal wall was perpendicular to a (quite exposed and windy) gable end wall and I left a buttressing nib of 2 brick lengths. What reassured me was that after removing some plaster but before I demolished the brickwork, I saw the mortar joints had already failed in a large crack running diagonally downwards from about half way up the internal/external junction down to the floor. Only the lower half of the internal wall could have been doing much in the way of structural support, but the house had been standing for decades. I re-built the nib from half way up. My situation differs slightly from yours in that the internal/external junction was only 1 or 2 metres from one of the external corners, so any butressing duty would be less than in your case.

Part A of the building regulations covers buttressing, but I don't recall the specific guidance in this case.

 

[^woody^]

You don't need a nib