www.teletextholidays.co.uk
Or, if you have Sky TV, call TV Travelshop or any of the other companies on there - they have mass buying power and can match most highstreet offers.
When you're offered accomodation go to www.holidaytruths.co.uk and check out the resort and the hotel. Real reviews from people who've actually been there. None of that rubbish you get in the brochures.
Good Luck
Neil