Yup as Castiel and a few others have said, all online.
We refer to them as "office copy entries" (OCE's) and its £4 for the title and another £4 for the plan. That is of course if your documents are electronically stored online, not everything is yet. I actually spoke to a guy at the Land Registry today whilst I was phoning to see if they had a more legible copy of some lease from 1926 and they told me afraid not and that they've only been actively scanning old stuff in for about the past 4 years. Most new builds/new sales/transfers of land will be scanned straight away now though.
If you do request the docs and they're not available to download electronically straight away, it can cost somewhere between £12 and £24 to get what you need I think.