Link to manual for that TV;
http://documents.knowhow.com/TV-Home%20Entertainment/Logic_27WN2_IB.pdf
Suggests it is capable of accepting & showing a 720p HD signal but not classed as "HD Ready" as it cannot accept a digital HDMI signal (no HDMI inputs) which it would need to meet the official "HD Ready" criteria. Nor does it appear to have a "Freeview" digital terrestrial tuner, just an analogue tuner but terrestrial analogue signals are all turned off now.
As has been suggested above, use a set-top box to access everyday digital TV in SD, or satellite (Fressat) services - but you will need one with a SCART connection to feed the TV and these are quite rare now most have moved over to digital HDMI connections. It's essentially then a "dumb" monitor relaying whatever you connect to it, rather than a full-function TV.