Upgrade to php 7 causing charicter issues

I have two sites on my dedicated server and there suffering with charicter issues as you can see from the link below in the pricing area and other areas accross the site. It also caused some issues although not as noticable on my forumite.co.uk website. These issues started after updating to php 7 from 5x. I did everything by the book from what I can see and gone over everything again but no fix to be found. I dont want to revert back the php 5 as sites are running 5 times as fast, especialy forumite.co.uk

Here is the link to see the problem in the pricing boxes. https://bdthree.co.uk/web-hosting-bradford/

I have give you permision from within my dashboard to access either site.

Any help appriciated.