There are a number of companies that offer ‘quick house sales’. This will usually lead to you being offered a lower price for your property, usually between 10-25% lower.
In return you can get a fast cash sale for your property. These should only be used as a last resort as a lot of these companies have received very negative press and some have been investigated for unfair practices.
If you want a quick sale, ask your estate agent to market the property at 5-10% below market value for cash buyers only.