Filled up the coolant last night to max and after 100 miles its back down to below minimum. However, its never totally empty. If you look in the coolant bottle to where the hole is on the right that the coolant comes out (no good on technical stuff!), the coolant fills about half that hole. Never seems to drop below that so not sure if thats enough to keep it going. If thats makes sense!
Just filled up again and you can see it leaking from somewhere so I have took some photos underneath.