  We present a complete momentum-space prescription for the renormalisation of
tensorial correlators in conformal field theories. Our discussion covers all
3-point functions of stress tensors and conserved currents in arbitrary
spacetime dimensions. In dimensions three and four, we give explicit results
for the renormalised correlators, the anomalous Ward identities they obey, and
the conformal anomalies. For the stress tensor 3-point function in four
dimensions, we identify the specific evanescent tensorial structure responsible
for the type A Euler anomaly, and show this anomaly has the form of a double
copy of the chiral anomaly.
