Farnell i found easier and the trick is not to pay postage i think on the phone it is 30 quid but if you purchase on line it is 20 quid for free postage. Cpc is generally much cheaper even for the same or similar items but i think the minimum postage is a bit higher at 40 or 45 quid.
Both companies are really good and delivery even with free option is only 1 to 2 days. I use a credit card to pay before they send.