transactions by acquirers operating in the United Kingdom 69all transactions acquired by: (a) UK-based acquirers (or an operator acting as such an acquirer)75 resulting in payments to merchants located in the United Kingdom; (b) UK-based acquirers (or an operator acting as such an acquirer)75 resulting in payments to merchants located outside the United Kingdom; and (c) non-UK-based acquirers (or an operator acting as such an acquirer)75 resulting in payments to merchants located in the United Kingdom.