Self employed client is putting through £10 per week as a round sum for pay-as-you-go mobile phone costs and (so far) has not provided receipts. Would this likely raise any questions from HMRC on inspection? I can't find any specific enough guidance on the HMRC website - plenty on employees and BIK etc, not much on SE.
Depending on your clients trade, £10 per week doesn't seem unreasonable given that many contract phones are about £40 per month. Without the receipts there is always a danger it could be challenged by HMRC, but as long as your client could produce either receipts or bank statements as proof at a later date I think you'd be ok to put it through.
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