Yes it is possible to terminate early but generally early termination charges may be applicable, these early termination charges will be calculated based on the mileage and condition of the vehicles and the unexpired portion of the lease.
Claim VAT on the maintenance element of the contract
Claim the VAT on the lease rentals of a light commercial vehicle
Since 1st January 2009 on any motor vehicles which are within CO2 bands A,B and C i.e. C02 emissions of less than 156g/km you may be able to claim up to 20% of the VAT paid subject to certain terms and conditions