Is it compulsory to use the flex outlet on a fused spur?

[Riomtaster]

Hi all,
BS1363 Switch fused spur with flex outlet has been installed. But the installer hasn't used the flex outlet, they've used singles in conduit and the cable grips are still in place on the spur. However the client has challenged this, implying it should be changed out to a standard spur without flex outlet.
Can anyone confirm if the client is right here, that it should be changed? And if so, is there a BS ref to support this?

Thanks everyone / anyone in advance!

 

[westward10]

Yeah the trouble is its on a Gas Pressure Reduction Station in the North of Scotland. Contractors are based in Wales. Client also needs to arrange for site isolations so it becomes a bit more than a 5 min job.
Certainly bigger picture I'll just be spec'ing the Switch Fused Spur with no flex outlet and they can use an M20 stuffer if they have a flex cable to install.

Stuffing glands don't really offer correct cord restraint, if a cord is being employed the accessory should incorporate the cord outlet.

 

[Riomtaster]

I presume when you say singles in conduit, these enter the back box directly (set in the wall) as this flat plate design does not allow for flex entry from other than the front of the plate, and certainly not 'singles'.

Surface Mounted backbox with supply via 20mm conduit entry in the top of the MK metalclad backbox knockout.

 

[Riomtaster]

Stuffing glands don't really offer correct cord restraint, if a cord is being employed the accessory should incorporate the cord outlet.

Cheers Westward. I fear this thread has grown legs from my initial query.
The Spur is surface mounted on metalclad backbox. Conduit entry in the top. I'm saying it could have a plastic stuffing gland PG13.5 or similar in the bottom M20 knockout for the flex to the appliance.
My query was initially have we inadvertantly designed a non-compliant outlet by not utilising the flex outlet on the fascia of the spur.
Which I think the general consensus is that while it may or may not be compliant, its certainly bad practice.
Again thanks all.