JournalTOCs is a current awareness service which enables you to keep up-to-date with the scholarly journals in your areas of research. It is a freely available service for individual users. It provides access to the largest, free collection of scholarly Tables of Contents, over 21,000 journals from over 1,700 publishers. You can choose which journals you would like to follow and you will then be alerted when new issues of your followed journals are published.
Oxford Brookes Library webpages for researchers provide a range of information specifically for researchers including a section, under Managing information, on keeping up-to-date. There are details about online databases and e-journal collections that offer alerting services which help you stay current.