In the mean time I shall be writing to the CAA and EASA pointing out that the practice of gliders operating in cloud is an en route hazard to every other airspace user and they should introduce regulation without delay.
Powered aircraft can also operate in cloud without a transponder
But be careful what you wish for, since maybe EASA will ask the UK to go down the route of many other countries and remove the right to the freedoms to fly in Class G in IMC. More Controlled Airspace and more rules would be inevitable, i.e IMC flights would be operating under IFR and therefore an ATC clearance would be required