In England what crime does this fall into?

between one person making “brief contact with someones genitals with a stick to humiliate and bulky them no sedual intrnt between 2 Yr 8 boys no coercion,dirext physical contact,no penetration,no repetition or prior behaviour they would just bullying him and laughing at him after it happened It made like 2-3 brief contacts it’s unsure if he tried to arouse him to bully and humiliate him even tho it failed
.It was used to humiliate and bully him,nothing was said they laughed at him,there wasn’t any prior or repetition after of this behaviour,no sexual threats although they repeated cursed at him on a daily basis
They didn’t say anything b4 or after
They moved a hockey stick through his legs than up so that the head of the stick can touch his genitals,no sexual commends and was a one of,both were in beginning of Yr8,intent is unknown but most likely to bully and humiliate him in that way
To embarrass and humiliate him,they were behind him,it was unexpected,the head of the stick made contact with his penis 2-3 times briefly for 5 seconds overall before it ended,they laughed afterwards,he was uncomfortable and told the teacher he then got over it and moved on within a minute
Regular size Hockey stick,wasn’t sharp,happened over clothing,never tried to unclothe him, head of the stick made contact,the penis,5 seconds at most,no coercion at all in any way ,it was done behind his back,intentional,no direct touching ever and no one else touched the student in that manner ever again nor was it more than 1 person at the time, no consent,was uncomfortable,felt slightly humiliated but more uncomfortable,he froze,they did it before he could react,they laughed at him so likely to bully and humiliate him,most likely a bullying act, nothing was said before,during,after it just laughter no sexual comments or threats,he was bigger but not significantly so,same age,previous bullying but not like this nor was there like this afterwards,one off,no although they make inappropriate sexual jokes comments and moans in class,no inappropriate images leaked
Location: England