SCOTLAND in Union may be about to seek compensation from the Electoral Commission over the leak of the group’s secret list of donors.

The National has learned that the commission has formally apologised to Scotland in Union who have called in lawyers over the hugely embarrassing leak which showed that group was funded by friends of Prince Charles, Prince William, aristocrats, landowners, bankers and businessmen.

A spokesman for Scotland in Union, which is led by former Labour MP Pamela Nash, told The National: “The Electoral Commission has now written to us with an apology. We continue to consult our lawyers about next steps.”

The anti-independence group has been criticised for the secrecy over its donor list and particularly the fact that at least two individuals made donations through companies they own – one of them being a clan chief whose ancestor opposed the Act of Union in 1707.

By paying through their companies, the individuals concerned were able to make donations of £12,500 and £14,998 respectively. Because those donations were made outside “regulated periods” the donors do not need to be identified to the Electoral Commission by Scotland in Union.

Their spokesman added: “Only donations given specifically for election or referendum campaigns need to be declared.

“Not only do we not encourage this, we have never benefited from this type of donation. All our donations are in line with Electoral Commission guidelines.”

The commission confirmed that Scotland in Union had met the legal requirements and added: “The law also states that companies are permissible donors as long as they are registered at Companies House and carrying on business in the UK.

“With regards to questions about the owners of the companies and any donations that were made, you may want to consider contacting those companies directly.”