An update on the mats I had initially received. The 1st set I received failed to fit due to the location of the lugs in my MG4. So as per the email from carmats when they dispatched them I sent an email back to the customer services team. Dan picked up my case and looked into this, the initial response being as has previously been posted to try and move the location of the hole in the mats. This not working I went back with photos and measurements of the issue, Dan asked me to leave this with him to look to resolve and told me to continue to use the mats I had received to protect my car.
So Dan kept me up to date with things and they arranged a replacement set of mats, these have turned up today and bit perfectly.
So kudos to carmats.co.uk for resolving the issue, not of their own making, as the MG4 seems to have the lugs in a variable position.