There are millions of lamp posts in the UK, so chances are there’s one near your home. If not, you’ll no doubt have a fence or even a public cycle park, so there’ll be something to which you can lock your bike.
This is often the first option that comes to mind when you people consider suitable locations, and it, like most other choices, has its advantages and disadvantages.
Pros
Having your bike outside on public land will help you save space inside your property. As long as the location is close enough, you can jump on and ride whenever you need to, without having anything extra cluttering your hallway.
Cons
Left outside, your bike will be unprotected from its two biggest enemies: the weather and thieves. Constant exposure to rain will take its toll on your bike’s frame and components, causing rust over time, while the chances of theft increase substantially the moment darkness falls – decent lock or not.