SUBJECT TO COMPLETIONPRELIMINARY PROSPECTUS SUPPLEMENT DATED FEBRUARY 19, 2025 Prospectus Supplement to Prospectus dated March1, 2024 $%Fixed-to-FloatingRate Senior Callable Notes due 20$%Fixed-to-FloatingRate Senior Callable Notes due 20$%Fixed-to-FloatingRate Senior Callable Notes due 20$Floating Rate Senior Callable Notes due 20$Floating Rate Senior Callable Notes due 20 Barclays PLC We, Barclays PLC (the “Issuer”), are issuing $aggregate principal amount of%Fixed-to-FloatingRate Senior Callable Notes due20(the “20notes”), $aggregate principal amount of%Fixed-to-FloatingRate Senior Callable Notes due 20(the “20notes”), $aggregate principal amount of%Fixed-to-FloatingRate Senior Callable Notes due 20(the “20notes” and, togetherwith the 20notes and the 20notes, the“fixed-to-floatingrate notes”), $aggregate principal amount of Floating Rate Senior CallableNotes due 20(the “20floating rate notes”) and $aggregate principal amount of Floating Rate Senior Callable Notes due 20(the“20floating rate notes” and, together with the 20floating rate notes, the “floating rate notes”, and the floating rate notes together with thefixed-to-floatingrate notes, the “notes”). From (and including) the Issue Date (as defined below) to (but excluding), 20(the “20Notes Par Redemption Date”) (the“20Notes Fixed Rate Period”), the 20notes will bear interest at a rate of% per annum. During the 20Notes Fixed Rate Period,interest will be payable semi-annually in arrear onandin each year, commencing on, 2025. From (and including) the20Notes Par Redemption Date to (but excluding) the 20Notes Maturity Date (as defined below) (the “20Notes Floating Rate Period”),interest will accrue on the 20notes at a floating rate equal to a benchmark rate based on Compounded Daily SOFR (as defined below), calculated inarrear as described herein and compounding daily over each 20Notes Floating Rate Interest Period (as defined below), plus% per annum.During the 20Notes Floating Rate Period, interest will be payable quarterly in arrear on,,and the 20NotesMaturity Date. From (and including) the Issue Date to (but excluding), 20(the “20Notes Par Redemption Date”) (the “20Notes FixedRate Period”), the 20notes will bear interest at a rate of% per annum. During the 20Notes Fixed Rate Period, interest will be payablesemi-annually in arrear onandin each year, commencing on, 2025. From (and including) the 20Notes ParRedemption Date to (but excluding) the 20Notes Maturity Date (as defined below) (the “20Notes Floating Rate Period”), interest will accrueon the 20notes at a floating rate equal to a benchmark rate based on Compounded Daily SOFR, calculated in arrear as described herein andcompounding daily over each 20Notes Floating Rate Interest Period (as defined below), plus% per annum. During the 20Notes FloatingRate Period, interest will be payable quarterly in arrear on,,and the 20Notes Maturity Date. From (and including) the Issue Date to (but excluding), 20(the “20Notes Par Redemption Date”, and each of the 20Notes Par Redemption Date, the 20Notes Par Redemption Date and the 20Notes Par Redemption Date, a“Fixed-to-FloatingRate Notes ParRedemption Date”) (the “20Notes Fixed Rate Period”), the 20notes will bear interest at a rate of% per annum. During the Table of Contents 20Notes Fixed Rate Period, interest will be payable semi-annually in arrear onandin each year, commencing on,2025. From (and including) the 20Notes Par Redemption Date to (but excluding) the 20Notes Maturity Date (as defined below) (the “20Notes Floating Rate Period”), interest will accrue on the 20notes at a floating rate equal to a benchmark rate based on Compounded Daily SOFR,calculated in arrear as described herein and compounding daily over each 20Notes Floating Rate Interest Period (as defined below), plus%per annum. During the 20Notes Floating Rate Period, interest will be payable quarterly in arrear on,,and the20Notes Maturity Date. From (and including) the Issue Date, interest will accrue on the 20floating rate notes at a floating rate equal to a benchmark rate based onCompounded Daily SOFR, calculated in arrear as described herein and compounding daily over each 20Floating Rate Notes Interest Period (asdefined below), plus% per annum. Interest on the 20floating rate notes will be payable quarterly in arrear on,,andof each year, commencing on, 20and ending on the 20Floating Rate Notes Maturity Date (as definedbelow). From (and including) the Issue Date, interest will accrue on the 20floating rate notes at a floating rate equal to a benchmark rate based onCompounded Daily SOFR, calculated in arrear as described herein and compounding daily over each 20Floating Rate Notes Interest Period (asdefined below), plus% per annum. Interest on the 20floating rate notes will be payable quarterly in arrear on,,andof each year, commencing on, 20and ending on the 20Floating Rate Notes Maturity Date (as defined below). The notes will constitute our direct, unconditional, unsecured and uns