Current state of SR U and N moguls

I hope it is ok to group these five locos on one thread, but I am keen to know the current situation of them all.

Firstly 31806, that did so very well at the Spa Valley Railway Gala and following weekend, and I guess it is on its way back, or already back at Swanage after its use at the Mid Norfolk Gala last weekend.

I believe it had a boiler swap with 31874 to keep it in service, so does anyone know how much longer 31806 is expected to be operational under its current ticket etc please - usual caveats apply of course!

It will be great to see it out visiting near Kent again, but I do appreciate the very high cost of moving a tender loco around. Of course for me it is truly wonderful to see it as BR Southern Region 31806!

Then any updates on 31618, 31625, 31638 and 31874 if possible please. I have been to what I think are the relevant websites, but I wonder if there is any more recent news.

Many thanks in advance.

Bryan

 

31618 and 1638 are both in storage at Sheffield Park waiting for their overhauls.

31618 is planned to begin once the overhauls of Q 30541 and Schools 928 Stowe is complete

31806 has an active ticket (subject to usual caveats and annual inspections) till late 2030/early 2031

 

Was the three-cylinder U1´s timed faster than the two-cylindered?

 

31625 is/was tucked into a safe siding at Furzebrook on the Swanage Railway beyond Norden and just about visible if travelling onto River Frome and Wareham.
I remember seeing it when first arrived at Mid Hants around 1980 and travelled down to see a first steaming - around 96??