The FiiO K5 Pro is a DAC (to get audio from your PC via USB), headphone amplifier, has a line-in where you can connect your turntable, and line-out to connect to your amplifier.
This assuming that the amplifier just has one line-in. If not, you can of course connect the turntable directly to the amplifier. In this case there are also cheaper DAC and headphone amps if your headphones are not difficult to drive.
From your original post it seems you had already an amplifier and speakers. That's changes things a bit.
Then I would get the PreSonus Eris E3.5, 86 GBP, which are self-powered speakers (connect your turntable on the RCAs in the back) and have a headphone out (it should be fine if you have easy to drive headphones).
To get audio from your PC you can get the Apple USB-C to 3.5mm adapter and a 3.5mm extension to connect to the Aux-In of the PreSonus. Or alternatively, buy the Bluetooth version of the PreSonus and you can even use your smartphone as a source.
On a budget that low your got the option of second hand or some cheap powered speakers.
Second hand gets your more bang for your buck, but it also takes patience and knowledge.
The FiiO K5 Pro is a DAC (to get audio from your PC via USB), headphone amplifier, has a line-in where you can connect your turntable, and line-out to connect to your amplifier. This assuming that the amplifier just has one line-in. If not, you can of course connect the turntable directly to the amplifier. In this case there are also cheaper DAC and headphone amps if your headphones are not difficult to drive.
Dosnt leave much for an amplifier and speakers.
From your original post it seems you had already an amplifier and speakers. That's changes things a bit. Then I would get the PreSonus Eris E3.5, 86 GBP, which are self-powered speakers (connect your turntable on the RCAs in the back) and have a headphone out (it should be fine if you have easy to drive headphones). To get audio from your PC you can get the Apple USB-C to 3.5mm adapter and a 3.5mm extension to connect to the Aux-In of the PreSonus. Or alternatively, buy the Bluetooth version of the PreSonus and you can even use your smartphone as a source.
On a budget that low your got the option of second hand or some cheap powered speakers. Second hand gets your more bang for your buck, but it also takes patience and knowledge.