The Housing Cost rates for Susan would be between £1,280.46 p.c.m. (inner SW) and £1,047.11 pc.m. (outer SW) depending on where in South West (SW) London she lived. In ordinary circumstances this would make Susan’s rent affordable.
However, if she resides in ‘inner’ SW, her allowance is only £3.71 p.c.m. shy of the benefit cap. Baring in mind that her rent remains the same, and so she is still only left with £184.17 p.c.m. to live on.
If Susan were under 35, the Housing Costs rate would be £506.61 p.c.m. Susan would be unable to afford her rent.