Licensing of aerodromes is unique to the UK.
not true, Whopity. ALL German airfields are certified/licensed, at least for particular types of aircraft, so it's not unique to the UK.
If an airfield is only certified for gliders and/or powergliders, you cannot land/take-off and definitely not train there with a Cessna. Also, all airfields are required during opening hours to have someone at the field to cover rescue equipment and work the radios (lots of hot discussion about this going on for years).
Training is a risky business and I feel it's only right that it should be conducted at certified fields only......being certified, there is a certain guarantie that it is kept in order (grass cut, etc.).