you need to see if you can see the cause/problem - how is water draining away? guttering? air brick blocked?
Nothing obvious but the wall was put up when the kitchen was redone and I suspect the damp proofing was compromised/ not done properly. It’s only one section of the wall which was turned into a pillar for a steel to go on.
@underuser53929 started
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you need to see if you can see the cause/problem - how is water draining away? guttering? air brick blocked?