The Forces War Records website states:-

"Forces War Records is the definitive location for military genealogy records from WW2, WW1, Boer War, Crimean War and beyond. Our Military Records site is the ONLY location where you can find military records of over 4 million British Armed Forces personnel exclusively cross matched with over 4000 Regiments, Bases and Ships of the British Armed Forces going back to before 1350, making your military genealogy task much easier and more complete"


A pretty clear indication of what one should expect on the site I would think.