Well the reciever/tuner can be a lot of things, a box, a card, a TV with built in capablities.
So what you want is a FreeSat Box.
I do recommend an HTPC with a FreeSat Card, but they can be expensive to get a decent one.
If you'd like I can try and spec together one with a reasonable budget, but considering you can get a dedicated FreeSat box with modest recording abilities for under £300, and you likely have all the other required HiFi equipment (DVD, etc)... then that might be a wee bit of overkill.
Of the top of my head an ITX form factor with Twin USB recievers, Blu-Ray, and 1.5TBs of storage, WiFi and a DiNovo mini would cost you around £700. Closer to £800 if you don't have a dedicated amplifier for your sound and speakers. I have a similar setup, and it sits quite nicely under your TV and does well... everything.
Send me a PM if you want more information on this particular option.