Personally I'd get a good timber door as I wouldn't get a composite door again, they have a design flaw making mine (which opens directly into my livingroom from the street) draughtier than the old timber door it replaced and I don't like the kind of lock they come with, I prefer a traditional 5 lever mortice lock.. I haven't got anything worth nicking and don't have any fear where I live (in a mid-terrace on a main road) of people drilling or battering through my front door but I was conned into believing I needed that much security. I was quoted for 2 different types but the cost varies according to the glazing type and door furniture. This was in late 2024:
Quote 1: front door Rockdoor - Jacobean with Apollo glass design - clear backing glass & clear top fan light. Anthracite grey outer door sash - white inner door sash - white UPVC frame - lever handle - letterplate - urn knocker. The total cost for this job comes to £2,415.00 inc Vat @20%
Quote 2: Homeframe composite front door - Rome 2 with horizon glass design - clear top fan light. Anthracite grey outer door sash - white inner door sash - white UPVC frame - lever handle - letterplate - urn knocker. The total cost for this job comes to £1,938.00 inc Vat @20%
As The Tiler said, these composite door manufacturers have local approved fitters but I'd go for a traditional timber door and good joiner to fit it.