Not a problem! You can return your items to us through the Post Office. Please use this address: Returns Department, MandM, Moreton Business Park, Moreton-on-Lugg, Hereford, HR4 8DS, United Kingdom.
Just a quick heads-up, though - if you've already purchased a pre-paid Evri label, it's exclusive to their couriers. Make sure to check your nearest Evri store for more details.