Mae’n dda iawn gen i ddweud bod codi’r tâl wedi cael effaith real ar nifer y bagiau siopa untro sy’n cael eu rhoi allan yng Nghymru.   Dros y chwe mis diwethaf, rydym wedi bod yn gweithio gyda manwerthwyr a Chonsortiwm Manwerthu Prydain (BRC) i gasglu data oddi wrth sampl o fanwerthwyr i amcangyfrif maint effaith y tâl.  Mae’r data’n awgrymu bod nifer y bagiau untro a ddefnyddir yng Nghymru wedi lleihau’n aruthrol.  Dyma’r lleihad a amcangyfrifir gan fanwerthwyr:
I am pleased to say that charge is having a real impact on reducing the number of single use carrier bags supplied in Wales.  Over the last six months we have been working with retailers and the British Retail Consortium (BRC) to gather data from a sample of retailers to establish an estimate of the impact of the charge.  The data collected indicates that the number of single use carrier bags supplied in Wales has drastically reduced since the introduction of the charge.  The reductions estimated by retailers are as follows:Food retail - between 96% and 70% reductionsFashion - between 75% and 68% reductionsHome improvement - 95% reductionFood service - up to 45% reductionTelecommunications - 85% reduction