Conflict after wordpress update

Hi there

My client has updated their WordPress and there has been a conflict of some kind on the homepage between the Navigation and the slider. The roll over functionality has gone from the menu items – I’m presuming its a JQUERY conflict but I’m not 100% sure.

The slider is the JQuery plugin Owl Carousel (not the plugin) and the navigation uses Superfish.

This only occurs on the home page where the slider function appears. All otherpages are functioning. There are no errors showing on the console.

the site address is http://www.hf-group.co.uk

WordPress V4.3.1
JQuery V1.11.3

Many thanks
John