More than a third of small business owners and managers spend their summer holidays worrying about work, a new survey has shown.

Entrepreneurs are often too busy fretting about what is happening in the office to enjoy their annual break, says the report by Bibby Financial Services.

The poll of 300 managers also reveals that one in five spend up to 20 hours a week outside work fretting about their job.

Many of those questioned admitted that worrying about work was affecting their personal relationships.

Bibby chief executive David Robertson said: 'It is natural to let business concerns creep into your time off.

'However, worrying about work constantly is not healthy and it is likely to have a negative impact on both your social life and the business. Many owners and managers start up their own company in an attempt to "live the dream" and bring their passions into their working life. Entrepreneurs need to take time to relax and remember all the positives that having your own business can create.'