Merchants International Investment Corporation (U.K.) Limited ('Merchants') offers copy trading. I copied a top trader. The copy trades often executed at worse prices than the original. When I asked why they said it was due to latency and liquidity. So the feature is broken or they are skimming. Either way I stopped using it.
Pros: Segregated accounts|Multi-device support|Good analytical tools|Comprehensive tools
Cons: Currency conversion fee exists|No integrated tax optimization