Broker recommendations

[Big Rig]

I want to start investing £500 a month in the S&P 500. Can anyone recommend me a broker to do this please?

[bitchstewie]

I would look into:

Interactive Investor
IWEB
Hargreaves Lansdown
Vanguard

Each has pros and cons depending what you want to buy and how often.

I suspect Vanguard will work out cheapest and simplest as they offer free dealing even on ETFs so long as you're happy using their batch trading points.