To the OP
I take it you don't know what the acronym stands for then? its not a type of cable but more a description of what products are given off when it is set alight. It relates to the type of insulation more than a specific type of cable.
You can get LSHF versions of SWA, FP200, T+E, flex, MICC with an LSHF sheath. The type of glands you need will depend on the type of cable and sometimes the installation method.
Re-read the job specification, as I understand it if they are fire alarm break glass points you'll more than likely need a fireproof cable and as far as I am aware fireproof cables usually have LSHF insulation anyway, but do confirm this for yourself rather than just taking my word for it.
Also do some research into what LSHF is and also LSF and the differences between, there's a whole internet out there to help you and also i'm pretty sure the basics are included in the regs book and/or the onsite guide.