£108k
+45%vs Sept 2024Active13622631Private limited companyLondon
HEART AND RHYTHM DIAGNOSTICS LTD
Significant control: Jonathan Griffiths (25–50%), Rebecca Florence Griffiths (25–50%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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What does Heart And Rhythm Diagnostics Ltd sell?
Registered activity: Specialists medical practice activities (SIC 86220). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
HEART AND RHYTHM DIAGNOSTICS LTD is an active private limited company (company number 13622631) incorporated on 15 September 2021, registered in London. Its registered activity is specialists medical practice activities (SIC 86220). Latest micro accounts cover the period ending 31 March 2025, showing net assets of £108k, with 2 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 45% on the prior period (£75k).
Peer position · net assets
By net assets it sits in the top quarter of 2,817 comparable companies in London (median £16k, upper quartile £103k).
02
Ownership and control
- Mr Jonathan Griffiths
- owns 25–50% of shares
- holds 25–50% of voting rights
- Mrs Rebecca Florence Griffiths
- owns 25–50% of shares
- holds 25–50% of voting rights
- Rebecca Griffiths
- owns 25–50% of shares
- holds 25–50% of voting rights
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 15 September 20215 yrs ago
- Next accounts due
- 31 December 2026in 65 days
- Confirmation statement due
- 29 September 2027in 337 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 86220
- Specialists medical practice activities
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
2
Not reported the period before| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £108k | — | — | £1,661 | — | — | 2 |
| 30 September 2024 | £75k | — | — | £1,550 | — | — | — |
Current ratio58.03Current assets ÷ creditors within one year
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
06
Filing and accounts signals
- Net assets above zeroNet assets £108,291 at 31 March 2025
- Net assets up 10% or more on the prior period+44.8% vs prior period
- Current assets at least 1.5× creditors within one yearCurrent ratio 58.03
- Incorporated five or more years agoIncorporated 15 September 2021
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Confirmation statement duein 337 days
- Next accounts duein 65 days
- Accounts period endNet assets £108k · micro accounts
- Accounts period endNet assets £75k · micro accounts
- Incorporated
08
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All companies incorporated on 15 September 2021 · in Sept 2021.
09
Reminders for HEART AND RHYTHM DIAGNOSTICS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.