Morning Jonyface,
There are too many brokers to choose from! I'd recommend viewing these independent sites to see what broker will suit you best: money co uk, Independent Investor, City Falcon.
:-)
It's better to go through independent sites like Spread Cashback or Trader Rebate who give you a monthly rebate, no matter how little you trade.
Some spread betting brokers offer rebates but only when the volume exceeds a very high amount - therefore not catering for all spread betters.
I use...
Core Spreads offer a one-click demo so you don't need to enter any details in order to access it. Just go straight in and have a play around to check out the system.
Spreads vary per market and company. Also keep your eye out for "fixed" spreads v "variable" spreads. Fixed are far better for you.
There's a few decent comparison sites out there so take a look at these to get a better idea:
http://www.independentinvestor.com/brokers/spread-betting...