3. The documents referred to as being mentioned in this paragraph are—U.K.
(a)a bill or statement of account issued in respect of the supply of gas, electricity, water or telecommunications services to premises at a specified address,
(b)a bill or statement of account issued in respect of council tax,
(c)a bill or statement of account issued in respect of rates payable in Northern Ireland, or
(d)a statement relating to an account held at a bank or building society, which in each case is dated, or relates to a period ending, no earlier than six months before its use for the purpose of validation.