I had been considering moving my ISA to Alliance [ATS] as I hold shares in the Alliance Investment Trust, for which there has, until recently, been no 'holding' charge. Sadly, together with other developments over the last few years since the 'old guard' disappeared and charges under the 'new guard' keep increasing without a concomitant increase in performance, this has proved the last straw. I am in the process of re-registering with a different provider while watching what changes the dreaded 'RDR' brings about.
So, yes, not Alliance for a small investor.