There was originally no information about this man in the EJBA.
When he started researching the field, Jim Boys included only those men he knew from records had actually arrived in the Crimea and were entitled to the Crimea Medal. He later accepted that this was too restrictive, but was unable to add all the men who embarked for but did not reach the Crimea. Many, for example, died en route at Varna, Bulgaria, where epidemic diseases such as cholera were rife in the camps. Others arrived too late to qualify.
The current editors are intending to include these men, and will be adding information as soon as possible.
Further information, Crider 3rd edition, 2011, p.469:
Private Clement Hull, 1142, 17th Lancers was born in Chillington, Devon. He enlisted 25 October 1852. His had been a Shepherd. He can be found in military records in 1854 at sea, at Constantinople, and at Devna in [Devnya modern Bulgaria]. He died on 11 April 1854 at Varna [modern Bulgaria].
[PB: Probably from cholera.]
He cannot be found on the medal rolls because, although he embarked for the war in the East, he did not arrive in the Crimea.