They've certainly completed a good clean job that's for sure. All nice and tidy and well fitted. Yup, relocation wouldn't really be an option I don't think given the size and potential costs. Dropping the water level an inch and fitting a food safe plastic sloped platform under the outlet that has a leading edge that dips into the water may be an option. That way there is still the required air gap but it gives a landing area for the water to dissipate it's energy onto and then flow into the cistern. I'd inquire about that one with Thames and WRAS.
Obviously Keraflow will say that if it gets them a sale
Obviously Keraflow will say that if it gets them a sale