AION SILICON LIMITED

• ⚠

  Material uncertainty over going concern

  However, the Directors recognise that the Group and Company remain reliant on a small number of key customers. The absence of a secured additional large contract introduces uncertainty into the forecasted cash flows. The sales team is actively expanding the booking pipeline in order to address the reliance on key customers. Therefore, without the successful conversion of pipeline opportunities into contracted revenue, there exists a material uncertainty that may cast significant doubt on the Group's and Company's ability to continue as a going concern.

1. AION SILICON LIMITED 2025-04-28 → present
2. SONDREL LIMITED 2002-07-23 → 2025-04-28

Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers

Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.

Accounting basis

FRS 102

Reporting scope

Standalone (parent only)

Auditor

S&W Partners Audit Limited

Audit opinion

Unqualified (clean)

Going concern

Material uncertainty disclosed

“However, the Directors recognise that the Group and Company remain reliant on a small number of key customers. The absence of a secured additional large contract introduces uncertainty into the forecasted cash flows. The sales team is actively expanding the booking pipeline in order to address the reliance on key customers. Therefore, without the successful conversion of pipeline opportunities into contracted revenue, there exists a material uncertainty that may cast significant doubt on the Group's and Company's ability to continue as a going concern.”

Group structure

1. AION SILICON LIMITED · parent
   1. Sondrel (Xi'an) Company Limited 100% · China

Significant events

• “On 7 January 2025, the Company entered into a tri-party Variation and Settlement Agreement with a key customer and a supporting supplier, resulting in the buyout of the existing customer contract. As the agreement relates to conditions existing at the Balance Sheet date, this event is considered an adjusting event after the reporting date and therefore was recorded in the year ending 31 December 2024.”
• “During January 2025 a contract for software licence was renegotiated, resulting in a reduction of £9,873,268 to the carried forward outstanding finance lease liability. This has been treated as a non-adjusting event after the reporting date.”
• “On 28 April 2025 the Company changed its name from Sondrel Limited to Aion Silicon Limited.”
• “On 15 May 2025 the Company changed its registered address to 33 Great Portland Street, London, W1W 8QG.”
• “The lease for the Theale office has been terminated effective 31 October 2025.”

Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers

Filings

6

last 12 months

Capital events

0

last 24 months

Officers appointed

0

last 12 months

Officers resigned

0

last 12 months

Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.

• Turnover

  -14%

  £9,178,211 → £7,891,170

• Cash

  +50,883%

  £877 → £447,121

• Net assets

  -13.2%

  -£30,945,519 → -£35,023,404

• Employees

  +24.5%

  49 → 61

• Operating profit

  +79.6%

  -£16,583,287 → -£3,375,792

• Profit before tax

  +71.6%

  -£17,225,203 → -£4,889,708

• Wages

  +18.1%

  £3,529,482 → £4,166,859

Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers