SFE/ASX Broker

Does anyone know of a broker for SFE, I am looking to trade the 3 and 10 year Australian bonds. I feel like I have exhausted the list of brokers. I found some which need 25,000 USD + account balance or charge ridiculous comissions.

I have £7500 to deposit and I am a high frequency trader.

Any help is appreciated!

Cheers.