If you are after a deal that is being chased by thousands of others, then you could find yourself struggling to get the service you want. Your line must also be clear of all 'tags' which are placed on by your existing provider, so that a new provider can take over the line.
Even though you could be waiting for a deal to be delivered, it might still be worth the hassle you have to go through to change.
The pros and cons of moving to a new deal
Your existing provider will try to retain you as a customer, but your new provider will be keen to switch you over as soon as possible. But if you read the small print on your contract and deal with your broadband provider the right way, it should all be sorted out in good time. If you are having problems, you can always speak to the telecoms regulator Ofcom to get some assistance.
You should consider all deals available, and not necessarily be swayed by the most 'appealing', as thousands of others will be doing the same. Check out the cheapest deal, by all means, but check out the cheapest deal that is right for you - it may not be the one that the rest of the UK is chasing after.
Price to pay
If you are only just getting broadband, then you may have set up costs, such as the fee to install a BT phone line and buying a broadband modem. Look out for special offers which mean you can get these for free, or at a reduced rate, so you can save some cash.
If you do this, you will usually be tied into a deal for a set period of time, so that the company can recoup its money from you. Leaving within the agreed term might mean you have to pay a cancellation fee.