Another save my losses question

If I have a stock which is sitting at £100 and am happy to sell once it rises above £120. Would I set a Sell limit of £120

Yes and No, if you think it will go to 120 and not much more from there then yes I would put a limit order at 120 and not bother even if it goes higher. But if you expect it to go much higher then I would not put a limit order but would wait and then put an limit order.

As t212 doesn’t provide trailing losses I’m looking to reduce my losses on certain stocks.

I have multiple stocks which are losses at the moment and should they go above my purchase price I would like to automatically sell at X value above.