Season tickets are permitted to be purchased through your limited company. However, it is not tax-efficient to do so because they constitute a benefit in kind (BIK), meaning that P11Ds will need to be completed.
This results in tax charges for both the company and the individual personally, as well as increased accountancy fees for the extra work required.
It is more tax efficient to travel PAYG using a company card, retaining the tax relief whilst eliminating any additional taxes or compliance charges.