Common reasons Starling may be unable to accept a cheque are:

• The name on the cheque must match the name on your account, and must include your first name or initial, as well as your surname. For example, ‘Ms A Russell’, ‘A Russell’ or ‘Alice Russell’ are valid but ‘Ms Russell’ will be rejected. 
• The cheque must be in good condition and able to be read clearly
• Any alterations must be signed by the cheque issuer
• The cheque must be written in pen. Cheques written in pencil will be rejected
• The figures and written numbers must match
• The cheque must be dated within the last 6 months
• The cheque must be signed
• If uploading via the app, you may have exceeded your weekly limit (ten for limited companies, four for sole traders, personal and joint account holders)
• If uploading via the app, you may have exceeded the value limit for a single cheque (cheques in-app are limited to £500 in value)

Even if Starling accepts the cheque, the issuing bank may still reject it, for example, if there are insufficient funds in the account, or if the signature on the cheque doesn't match the signature on record. In this case, please ask the issuer to write you another cheque or pay you by another means.