Very common to swap bits and tyres around for mot over here.According to Daily Express (so it must be true!) the change is for tyres on steering axle of buses, lorries and coaches - NI not included?
Have you a link to the article / webpage that gives this information ?
He may own an MoT station but the broad statement about ALL vehicles over 3.5T doesn't seem to align with what Gov.uk has to sayThink the OP owns an MOT station reading some of his other posts so he should know.