British Medical Association page from November 2007 discussing the Law and ethics of male circumcision. The paper states that routine infant circumcision is permitted by UK law. The BMA discusses ethics without declaring if routine infant circumcision is ethical or not.
The BMA discusses the best interests of the patient:
Best interests
In the past, circumcision of boys has been considered to be either medically or socially beneficial or, at least, neutral. The general perception has been that no significant harm was caused to the child and therefore with appropriate consent it could be carried out. The medical benefits previously claimed, however, have not been convincingly proven, and it is now widely accepted, including by the BMA, that this surgical procedure has medical and psychological risks.
The BMA then concludes that
It is clear from the list of factors that are relevant to a childs best interests, however, that parental preference alone is not sufficient justification for performing a surgical procedure on a child.