PRU 4.12.15

The risk weight for any CR Exposure in the corporate asset class that does not have an external credit assessment by a recognised external credit rating agency must be the risk weight determined in accordance with the table under Rule 4.12.13 or the risk weight that is applicable to an CR Exposure to the central government of the jurisdiction in which the corporate is incorporated or established, whichever is higher. If a short-term CR Exposure in the corporate asset class with an issue-specific external credit assessment:

(a) attracts a risk weight of 50% or 100%, then the Authorised Person must apply a risk weight of not lower than 100% to any unrated short-term CR Exposure to the same corporate; or
(b) attracts a risk weight of 150%, then the Authorised Person must apply a risk weight of 150% to any unrated CR Exposure (whether long-term or short-term) to the same corporate.