If you want a specific model, then leasing can be expensive. In this case, look around and see if there is a deal available somewhere. Also worth noting that some deals are business only.
If you are flexible with make/model, then you can get really good deals.
We had a new shape Civic idtec on 3+23, £180 per month, 10k milage p/a.
Watch out for leases with 9+ initial payments or big admin fees, or low mileage allowance.
For us it was a no brainer and worked out about £100 p/m cheaper than a PCP deal on the same car when the deposit was a similar amount to the initial payment.