Days after being flogged for drugs offences at the notorious Changi prison in Singapore, former British public schoolboy Ye Ming Yuen lies face down in his cell, in excruciating pain.

The open wounds from 24 strokes of a 4ft bamboo cane to his naked buttocks are so severe, they still ooze blood.

All he has is a towel to stem the flow. Sitting is impossible.

So horrific are his injuries that when a paralegal saw them this week, she almost fainted.

Unable to sleep, Yuen prays to God to calm his fears of long-term physical damage.

Bowel problems have plagued him since the caning.

Today we can reveal the brutal effects of the ‘judicial corporal punishment’ meted out to convicts in Singapore with an eye-witness account from Yuen’s human rights lawyer and his own words from prison.

‘The first thing Ming said when he came into the prison visiting room was “see this” and pulled his shorts down at the back and it just looked horrendous,’ says Ravi Madasamy, better known as M Ravi or Mr Ravi, who is contemplating legal action under international human rights law.

‘All over his buttocks were multiple marks and deep lacerations. It was so shocking my female paralegal who was with me almost fainted.

'The wounds were so deep with blood, flesh and layers of the skin exposed. He didn’t have any bandages, just a towel to put over the buttocks. He couldn’t sit for too long so he was standing up.

‘It was the first time I had seen raw injuries like this and it left me deeply affected, thinking, “How can this be allowed to happen in a civilised country?”

‘Usually my clients come to me years later, complaining of long-term injuries, so I only see the