The penalty for an early termination of a lease are specific to the individual company, but typically the amount is around 50% of your remaining lease payments, so this could be very expensive if this is required during the early stages of your term.

With a PCP you can end the agreement under voluntary termination if you have paid 50% of total amount payable, whether this is solely through monthly payments or an additional lump sum, so this may be a better option although still not without some risk.

Alternatively you could look at shorter term leases where you pay a higher monthly fee but with less risk should you need to end the agreement early.