Were you arrested for this?
Does the requisition give you the option to plead by post?
Normally you can plead guilty by post on a summons rather than when on bail but not normally with an imprisonable offence.
They will need you to attend for sentence so they will need you to attend for plea in order that they can put you on bail.
You can always try to plead by post and you do not commit a bail act offence if you do not go but they will convict in absence and make you pay costs.
I'm very sorry but that is the reality.
Can I clarify anything for you?
Yes, so as I said they will need you to attend so they can put you on bail