Mae Carillion yn ddarparwr gwasanaethau allanol ac adeiladu sylweddol i Lywodraeth y DU, ond gallaf gadarnhau nad yw'r un fath yn wir yma yng Nghymru.
Whilst Carillion are a significant provider of outsourced and construction services to the UK Government, I can confirm that they are not a significant provider of services here in Wales.