One great thing about webhosting is that it is usually quite reasonably priced. Low cost web hosting is not all that hard to find. The challenge is to find something that is both affordable, and reliable.
This means your Shared Web Hosting company will keep up the maintenance and updates, and provide technical support for its users. This is a huge benefit for those who do not have the time, knowledge or resources (like many small businesses I know) to do this. In this sense it makes huge sense to go with Shared Web Hosting UK. The average cost of a reliable shared web hosting package is less than $7.00 per month. You will be paying at least ten times that amount for a dedicated server.
The next part is to get your Shared Web Hosting UK onto the internet. This is a little more complex than the designing and developing stage of your site. You have to get your hands on a piece of FTP software. There are many free FTP "clients" online that you can download, such as FileZilla. This is what allows you to connect to your web hosting provider's computer (server) and upload your files, just like if you were to copy files from your hard disk to another place (usb drive, cd etc).
Is the website you are hosting a private one? Perhaps, it is a family portal that is meant only for your family members, relatives and friends. Or, are they websites that you will promote to the general public to get as much visitors as possible? In that case, your traffic volume will be quite high each month.
As an added benefit, there are companies that not only do they provide you with Affordable Web Hosting but they also give you a ton of extras like adding blogs, shopping carts, MySQL databases and all that other stuff you could need.
If you have time, search for comments by users of the provider on internet forums or elsewhere online. Or go for the larger more established hosting companies who have built a trusted reputation. Most good hosting companies have multiple server data and power backups. A few also promised 100% and they do that by guaranteeing refund of fees in the eventuality that any downtime might happen.
If you're not comfortable asking a company a whole bunch of questions then just find a friend who has a few websites online and ask them which host they use - like I said a recommendation from a trusted friend is worth its weight in gold when it comes to shared web hosting.