Smith appeared on the first programme of the new Dragons' Den this week. All five dragons fought over his product TrueCall, which is a device that blocks nuisance calls.
Lewis PR will aim to secure national broadcast and newspaper coverage for Smith and his company, which he co-founded with John Price. The agency will specifically target the business and lifestyle sections of newspapers.
Smith, who works in the call centre industry, accepted Peter Jones' offer of £100,000 for a 12.5 per cent stake in his venture. This was the lowest stake Jones had taken throughout all seven series of the programme.