MODX Evo server move causes error about unspecified timezone in PHP

Having just moved a MODX Evolution based website from the old server to a 1and1 VPS, we started getting errors about not specifying a timezone in PHP. Tried several suggestions around updating htaccess but no luck.

Adding this line to the index.php did the trick.

ini_set("date.timezone", "Europe/London");

Apparently its because the default PHP setting on the 1&1 VPS is to use Fast CGI