If it is the e-mail for the forum then Click on "Setting" on the green bar at top of page and when that opens click on "my account" to change e-mail, password etc.
If it is the e-mail to do with subscriptions then click "subscribe" on the black bar towards top of page, red box "Model engineers workshop subscriptions" and then right at the top of the page that comes up you will see "my account" hover your mouse over that and you will get the option to alter contact details.
Edited By JasonB on 05/12/2019 20:13:58