Pritch, do you mean you found flights for £235.00 each for 4 people or was it £235 for all of you?
Unless you have the nerves to make yourself wait for the very last minute deals, the cheapest company I have found so far is with Cheapestflights.co.uk. We have just booked 2 tickets for 9 September (Gatwick to Heraklion) for £145 each.
We used the same company for a week's car hire (£137) and insurance (£26.00).
I have used them before for trips to Lesbos and to Costa Blanca with no problems, so I am quite happy to recommend them.
The only thing you have to make sure of is to register yourself on their website. That way you qualify for the member rates. They do not bombard you with information, nor do they seem to pass your details on to other companies, which can often be a nuisance. (My God, I must stop this - I am beginning to sound like an advert for them!)
Anyway, however you get there, let's all have a great time.
Stuart