Alas, it's on hold so there's no progress yet Peter
Now that Parkend Marsh Sidings is finished (well almost!) work has to concentrate Balcombe and the Viaduct on which much work is needed for it's first proper public outing next year at Fareham and in 2025 in Bristol. https://www.youtube.com/watch?v=sts-HyvihjQ
In the general scheme of things, it probably won't be started until 2025 after the above commitments are fulfilled. I console myself by looking in the boxes from time to time, of all those lovely items of stock!
Also 10800 and I will be building 'Lisanno', an Italian '60s layout for which we have acquired a stock of those lovely brown electrics. It was started by the late Grahame Hitchens (bgman) and the plan is to build it in his memory.
So much planned..... so little time!