Virus infecting my site

Hi Folks

I am bemused as to how it happened but i appear to have a virus affecting my football club’s website.

https://www.tonbridgeangels.co.uk

it is fine when you type in the url but when the site is searched “tonbridge angels” and accessed by google it redirects you to another site.

How do i get rid? the fans are reporting viruses left, right and centre circle ??

Cheers All