I've sold six times. Whether it's easy or not depends on whether the property is registered or not.

If it's Registered (at the Land Registry) the title deeds are simple, if it's not the deeds could be a folder up to several inches thick if it's a really old property. The thickest I've had was around three inches for some land when I bought.

Apart from checking that there's no charges (financial) on the property, searches have to be made to see whether there's anything in the local Council and District/County Council plans which might affect the property. Often, it's those searches which can take time.

The contract can be pretty simple, you can exchange contracts quickly, even over the phone between solicitors. As above, the conveyance can be simple or complex depending on the age of the property and/or whether it's registered or not.