How much money can I legally send overseas from UK?

Good afternoon, I am a UK resident and I am wondering about the regulations regarding sending money overseas. Specifically, I am interested in knowing how much money I am legally allowed to send abroad from the UK. Could you please provide me with some information on this matter? I understand that there might be certain limits or restrictions based on the recipient's country or the purpose of the transfer. Could you also clarify if there are any taxes or fees associated with sending money overseas? Thank you very much for your time and assistance.