Everline and the CEBR questioned more than 500 small businesses from across the UK, and found that media, marketing, PR and sales firms expected revenues to increase by 45 per cent by 2025, the highest figure for any sector.
This compared with predicted turnover growth of 43 per cent in both the finance and IT & telecoms sectors, while the least optimistic sectors were manufacturing (with projected growth of 29 per cent) and construction (28 per cent).
The research also shows regional trends, finding that London-based small businesses were the most optimistic, expecting revenues to increase by 44 per cent over the next ten years, with Scotland the second most optimistic (37 per cent), and the South (excluding London) the most pessimistic, expecting turnover to grow by just 24 per cent.
It also found that media, marketing, PR and sales firm were more likely than any other types of small business to have dedicated resources to online activities.
Last week, separate research by the Institute of Practitioners in Advertising found that the UK's largest companies had slightly increased their spend on PR in the past three months. This was the fifth quarter in the past six to see growth in this respect.