The worked solutions for 2014 Section 1 are already provided for free by admissionstesting.org
Please note: the solutions provided on the website are not my solutions and I am not claiming them to be mine.
https://www.admissionstesting.org/Images/258226-specimen-bmat-2014-section-1-explained-answers.pdf
However, if you still have some doubts regarding some of the questions, then please feel free to drop a comment on this page. I will try to reply as soon as I can. Thanks!