It emerged this week, during an unfair dismissal tribunal brought against MJM, that Ms Mone's stake in the business was now 49%. MJM yesterday revealed Ms Mone's stake had increased from 47% following a strategic investment by MAS Holdings, a lingerie and swimwear manufacturer, in February.
MAS Holdings made its investment on the same day Ms Mone acquired the shares of her estranged husband Michael Mone, and Thomas Walker. Prior to those shares transferring to Ms Mone, the high-profile entrepreneur had held a 47% stake in the business, with her husband holding slightly more and Mr Walker 5%.
A company spokeswoman said Ms Mone had upped her share of the firm and her role had not changed because of the MAS investment.
The latest annual return for MJM at Companies House was filed on November 6 last year, before Ms Mone cut business ties with Mr Mone in February.
At the time of the return, Mr Mone was the company's biggest shareholder with 143 ordinary shares, with Ms Mone holding 142. A third shareholder, Mr Walker, held 15 ordinary shares at the date of the return.
It was at this point that MAS Holdings, which Ms Mone was introduced to on a trip to Sri Lanka, invested a "seven-figure" sum in MJM.
The tribunal heard that Mr Mone has set up a new firm, Pendulum Apparel.
The latest accounts for MJM International show that the firm saw pre-tax losses widen to £547,018 in the 18 months to October 31, 2012, compared with losses of £104,790 in the 12 months to April 30, 2011. Turnover fell to £7.4m for the 18-month period, compared with £8.4m for the 12 months prior.
The directors noted MJM would continue to incur losses in the 12 months subsequent to its October 31 period end, but said they expected it to return to profitability with the support of MAS Holdings and changes to its strategy.