<sod >In a report released on Wednesday, Moodyâs has warned it will downgrade the UKâs sovereign rating if Brexit leads to the loss of access to the EU single market as this would materially damage growth.< eod>< sod > In a report released on Wednesday, Moodyâs has saidÂ it will downgrade the UKâs sovereign rating if Brexit leads to a loss of access to theÂ single market, as this would materially damage growth.< eod>