You can't download a lease of £3 - only the Registry entries or Plan. I think that only those who subscribe as solicitors etc to Land Registry Direct can down load leases and in the majority of cases they are not in a downloadable format and a hard copy is sent.
I got mine recently from the HM Land Registry website, where I could download it for £3...
Another point that comes up is that the copy that is obtainable is an official copy which is basically a scanned version of a copy provided when the lease was first registered. In the days before photocopiers the copy supplied would have been a carbon copy which would be quite feint and would have got worse over say 40 years it was stored in the Land Registry archives - the consequent scanned version is sometimes totally unreadable. So you have to get hold of the original and send it the Registry and ask them to make a better copy!
As a conveyancing solicitor I believe the information given in the post to be useful (provided it relates to property in England & Wales) but I accept no liability except to fee-paying clients.