A good value lease is usually found via the in stock special offers, where a big lender has ordered a boat load of popular models and brokers earn commission in shifting them. The close the boat gets to the UK then the cheaper the deals, but you'll need to
shop around the brokers and time it just right - but you might end up with a different car, while saving £100 a month.
Otherwise most brokers are fairly similar in price, once you compare on the same terms - check the initial payment, annual mileage and term all match.