If you're an under-fire train company you might want to think twice about actively asking notoriously grumpy commuters for their opinions.

South West Trains just made that mistake - as part of their 20th anniversary celebrations.

The people of London and Surrey obliged.

Some people have been nice.

There's a serious point behind this. Satisfaction in South West Trains dipped again after the New Year on day two back to work.

Jan 4: Return to work marred by delays and fare hikes for rail commuters

It's a tough life for the people who run the social media accounts for the company. They have had to tweet the word sorry in reply to complaints 39 times in the past 24 hours.

Tweet @sw_trains if you want to take part