Mattresses at Southons Of Salisbury. Buying a new bed is a significant and important purchase- let's face it, get it wrong and you could be facing years of discomfort and disturbed sleep. At Southons, our helpful and experienced staff will be pleased to guide you through the process, ensuring that you make the decision that is best for you. We offer bases of varying support levels and in the full range of sizes. Browse our relevant pages on line and in store and pop in store to see exactly what we can offer!