Amcangyfrifwyd yn yr achos busnes mai tua £30m oedd cost newid TGCh dros y pum mlynedd cyntaf. Mae’r costau newid sydd wedi’u nodi eleni ychydig dros £9m, gan godi i oddeutu £9.4m yn y flwyddyn nesaf.
The cost of ICT change was estimated at approximately £30M in the business case for the first five years. Identified change costs in the current year are just over £9M, and for next year are circa £9.4M.