1941 Fighter Command Sector Ops Rooms?

The large (163' x 80') Operations Block formerly at Atcham is listed as being to AM Dwgs. 5291-5/41.
Middle Wallop (demolished) and Fairwood Common had one too (also demolished), Exeter's one survives next to the 60s ROC HQ, and what appear to be the remains of one at Woodvale are also standing.

So far the only things these five sites had in common are that:
A: The Ops Block was built a notable distance away from the airfield
B: They were all Fighter Command Sector Stations

Were there any more examples built?

Thanks to NP for pointing out the (unfinished?) example at Tain.

I'll also add the demolished one at Peterhead and the surviving one at Barnton Quarry for Turnhouse.

A couple of rough "by eye" renders to illustrate.

The "full" version:



And the "reduced" version seen at Tain and Woodvale:



Amalgam of the Portreath and Middle Wallop layouts showing the attached TB annexes:

Working list so far.
Computer model above amended to reflect the "Attached Offices" type. The main Ops Block on at least two of these is noticably shorter than the "full" version:

Sector	Location	Offices	Status	Length
Atcham	RAF Atcham	Internal	Demolished	163'
Ballyhalbert	Tubber Na Carrig	Internal	Demolished	163'
Exeter	Poltimore Park	Internal	Extant	163'
Fairwood Common	Clyne Common	Internal	Demolished	163'
Middle Wallop	Over Wallop	Annexes	Demolished	140'
Peterhead	Howe o' Buchan	Internal	Demolished	163'
Portreath	Tregea Hill	Annexes	Extant	140'
Tain	RAF Tain	Annexes	Extant	163'
Tiree	Baugh	Internal	Extant	163'
Turnhouse	Barnton Quarry	Internal	Extant	163'
Valley	Llanfihangel Yn Nhywyn	Internal	Extant	163'
Woodvale	RAF Woodvale	Annexes?	Extant (Partial)	N/A

Here's another Paul.

RAF Tiree, it's somewhere here:

wtp2.appspot.com/wheresthepath.htm?lat=5...grat=None&rgrat=None

Described as Building 502 on RSP TRE566 26 NOV 43

Look at Post # 9 in the Tiree thread and see Martin's pictures under 'All RAF images Tiree'

I see it, just off to the east.

Thanks Peter.

As we seem to have at least two variants are they all to the same set of drawing numbers (which comprise of at least 5291/41 to 5295/41) or just a subset?

The "full" version of the Sector Operations Block is given as 5291-5/41 on the Atcham RSP, although the series may also include 5296/41.
None of these drawings seem to be held by RAFM Hendon.
As most of the "reduced" ones seem to include the bulk of the "full" design they may be to an as yet unknown deviation drawing.

Ouston appears to have a Fighter Station Operations Block to AM Dwg. 16266/39 but without the WAAF Rest Room.

Why some sector stations got these new Ops Rooms during the 41-43 period and others retained their pre/early-war ones is still a mystery.
I've yet to identify any sites in the 11 and 12 Group areas, and other stations that would be expected to have one, Honiley for example, are still unknowns.