Faulty wall light

So we have a pull cord wall light beside our bed and the pull cord switch had stopped working.

I’ve taken it off the wall and isolated the power (it was on a circuit with sockets - should that be the case?). Looks like the spring function in the little switch (photo attached) is goosed.

So the question is can you pick these up separately or is it now a case of having to replace both sets of lights (matching one on the other side of the bed).

Thanks.