That's it really, he's five, being assessed for HFA and has up until now been a placid, laid back chap. Unfortunately, he's just discovered how to hit and kick (probably learnt from his older sister)
He becomes fixated on something (Saturday - Ben 10 socks in Primark, lining them up on the shop floor
last night - playing with dd's guinea pigs - when it was time to get ready for bed), we try and move him away from the 'fixation', he starts to lash out - hitting, kicking etc.
This is a new behavoir, which we'd like to nip in the bud, before it gets out of hand (and he does it to class mates)