Shawbury VOR What is it's DOC

[Cypres]

I've just been looking in the on-line AIP trying to find out (amongst others) the DOC for Shawbury VOR/DME (Ident SWB Freq 116.80MHz).
The document UK AIP ENR 4-1-1-1 gives the relevant info for UK en-route navigation aids but no mention of Shawbury. I then tried looking for any info on Shawbury and info on Shawbury is scarce in the AIP.
Is this because it is military and not used as such for en-route navigation?
The VFR Half million map depicts the SWB beacon and relevant frequencies but obviously doesn't have the DOC.

Any insight?

Cypres

[Hansard]

According to the latest RAF Flight Information Publication, the Shawbury VOR's Protected Range (DOC) is "50/10" which indicates that the facility has a range of 50nm protected from interference up to a height of 10,000'