The UK refuses to look into a company who are suspected of money laundering

The UK company telecoms giant Lycamobile who are apparently a big donor of the "Prince of Wales Trust" have been suspected of money laundering, but when asked by the French the British government decided on not allowing their to be an investigation into this, I find this typical, this company was investigated by the French and 19 people were found to be laundering money, but the British Government refuse to look into it!

A letter, from the team at HMRC from foreign governments, stated: “It is of note that they are the biggest corporate donor to the Conservative party led by Prime Minister Theresa May and donated 1.25m Euros to the Prince Charles Trust in 2012.” This email referred to Lycamobile's donations to the British Asian Trust, which was founded by the Prince of Wales to tackle poverty in South Asia, not to his youth foundation The Prince's Trust which has never received any money from Lycamobile. So will this company ever be actually looked into?