Yep, most offer sliding scales. I do not know anybody that will offer these rates to remote clients unless they are doing at least 20k rt/mnth but if you have a desk at GHF you can VPN remotely from home.
I am looking for a clearer. Fortis want a minimum of 1000 pounds a month in clearing income before exchange fees, which makes a holiday expensive! The attraction of Fortis is as a bank your money should be safer. Any good deals out there?