Prices of buying

Hello
My question is if i am conducting a buy transaction what price i am buying at if the transaction needs at least one day to be done
The price when i bought or the price when the transaction is conducted by the IE?

The price when the transaction is conducted by IE. If you look at the LSE webpage for the ETF around 14:30ish, that’ll be roughly the price youll get. Obviously by then the order is already locked in.