Thanks for your question.
I will consider and do some research on your question and come back to you soon.
I have had an opportunity to review your question and consider.
You cannot deduct the parking charges from the rent. There is no statutory provision that you can rely on to do this.
It disappointing that neither the landlord nor the agent supplied you with the appropriate information on parking and that you required a permit prior to the tenancy commencing to prevent you from incurring fines.
I think it will be very difficult to recover the money from either the landlord or the agent. In addition, to repeat what I have said above, you cannot deduct the money from rent.
I hope this helps clarify the position.
Please can I ask you to accept / rate positively.
I am sorry but you cannot deduct the funds from rent.
You could try to bring a claim against the agent on money claim online. You insert details of the claim and the court will issue the claim. You have to pay a fee. Problem is is trying convince the court that the agent owed you a duty, breached it and you suffered loss. I do not think your chances of success are high and you may end up further out of pocket after paying the claim fee.
I do sympathise with your position and personally feel that you should have been made aware.