We recently flew to Israel via Brussels airport & booked the flights through Carlton Leisure.
The on-line booking procedure was straight forward and a confirmation email was sent very quickly. I contacted Carlton nearer the flight date about a couple of things and my email was answered relatively quickly.Printing the on-line e-ticket which was sent was easy.
I booked travel insurance through the site & got what I considered to be a good price after comparing it with a couple of other quotes. The on-line price is cheaper than booking by telephone, as is usally the case. I would however print the terms and conditions off so you know exactly where you stand.
Overall, an excellent experience with Carlton. Their communications are extremely good, no problems throughout the journey and I would certainly not hesitate to book a journey with them again. Highly recommended.