The Share Centre said that midcap companies outstripped the biggest firms in the FTSE 100.
Midcaps, which are more heavily exposed to the economic resurgence, saw their revenues and profits grow at a much faster rate than their counterparts in the top 100.
The UK’s top 100 firms saw headline revenues rise 1.0 per cent to £281.6bn. By contrast, revenues of £71.8bn among the FTSE 250 means sales were 3.3 per cent higher.
Gross profits from the top 100 fell 1.2 per cent year on year. The midcaps saw gross profits increase 5.1 per cent.
Mr Miah said: “Midcaps are storming ahead of the top 100 at every level, from revenues to profits. Midcaps are reaping the benefits of growth in the domestic economy.”