The email error is totally my fault - did it from memory instead of checking, which is never a good idea. I'll rectify it this evening when I get home from work but in the meantime please use chair@matrust.org.uk to get in touch with the Trust.
Cheques should be made payable to Mellor Archaeological Trust. I will suggest that this needs to be made clearer on their form and I will add a note to the page this evening too.
Thank you for pointing out the problem.