We have used intrerparcel for over 5 years. They are priced very competitively but I guess with that you have to expect a downside and these guys don't disappoint! Easy to use website offers all the main couriers at around 20% less than their own websites for ad-hoc deliveries. We use them once or twice a month and their UPS prices in particular are very good. The 5% future discount is a bit misleading as you have to join a shopping club to get the voucher - I wouldn't bother! Technology is basic but is good/straightforward as you'd expect so 2-3 minutes to book on a collection. No urgency though as most of the services are next day and you really need to book before 11am to guarantee same day pick up. Problems 2 or 3 times a year with missed deliveries or lost/damaged shipments - mostly resolved in the end. Offer of free insurance is a waste of time so if its a valuable shipment you should get additional cover. Contacting them is a trial, they should know that using a premium number and long hold times doesn't go down well with customers nowadays!! All in all enough goes right to keep using them....