Seiki Systems Limited company overview
Seiki Systems Limited is a private limited company registered with company number 04530492. It was incorporated on 10 Sep 2002 and its current status is active.
The registered office is at Gladstone House, Hithercroft Road, Wallingford, Oxfordshire, OX10 9BT. The company has 5 active officers. It was previously called Speed 9333 Limited.
Seiki Systems Limited upcoming deadlines
Year end accounts
Due 30 Sep 2027
Confirmation statement
Due 6 Jul 2027
Corporation tax payment
Due 1 Oct 2027
Dates are the ones Companies House holds for this company. Late accounts trigger automatic Companies House penalties starting at £150, and HMRC charges interest on late corporation tax.
Seiki Systems Limited at a glance
24 years
Trading age
8,828 days since incorporation
5
Active officers
Martin, Martin, Thomas, Richard
103
Filings on record
Latest: 4 Nov 2026
100/100
Filing health score
Accounts and statement up to date
Directors of Seiki Systems Limited
Former officers
Nature of business (SIC codes)
62090
Other information technology service activities
Allowable expenses for Seiki Systems Limited
Based on Seiki Systems Limited's SIC code (62090), these are typical tax-deductible expenses for a software & it company. Claiming them lowers the profit you pay corporation tax on.
Computers & hardware
Laptops, monitors and devices used for work.
Software subscriptions
Cloud hosting, SaaS tools, licences and domains.
Training & courses
Courses that update skills for your current work.
Working from home
A share of household bills or the £6-a-week flat rate.
Vehicle & mileage
45p a mile for the first 10,000 business miles in a personal car.
Staff & director salaries
Wages, employer NI and pension contributions paid through PAYE.
Accountancy & legal fees
Bookkeeping, year-end accounts, tax advice and company secretarial costs.
Business insurance
Public liability, professional indemnity and employer's liability cover.
Phone & internet
Business mobile contracts, broadband and a share of home internet.
General guidance only — every expense must be wholly and exclusively for business. Ask an accountant
Tax guide for businesses like Seiki Systems Limited
How much tax does a software & it company pay?
UK companies pay corporation tax at 19% on profits up to £50,000, rising to 25% above £250,000, with marginal relief in between. Claiming every allowable expense reduces taxable profit.
Does a company like Seiki Systems Limited need to register for VAT?
VAT registration is compulsory once taxable turnover passes £90,000 in any rolling 12 months. Many businesses register voluntarily to reclaim VAT on costs.
How much does an accountant cost for a limited company in Oxfordshire?
Fixed-fee accountants typically charge £60–£200 a month for a small limited company, covering year-end accounts, corporation tax and the confirmation statement.
Can directors of Seiki Systems Limited pay themselves in dividends?
Most small company directors take a low salary plus dividends. Dividends are paid from profits after corporation tax, with an annual £500 dividend allowance.
Filing history
4 Nov 2026 · AA
Audit exemption subsiduary accounts made up to 31 Dec 2025
4 Nov 2026 · PARENT_ACC
Legacy
4 Nov 2026 · GUARANTEE2
Legacy
4 Nov 2026 · AGREEMENT2
Legacy
22 Jun 2026 · CS01
Confirmation statement made on 22 Jun 2026 with updates
6 Jan 2026 · AP01
Appointment of Mr Harshavardhan Ramanan as a director on 1 Jan 2026
13 Nov 2025 · AA
Audit exemption subsiduary accounts made up to 31 Dec 2024
13 Nov 2025 · PARENT_ACC
Legacy
13 Nov 2025 · GUARANTEE2
Legacy
13 Nov 2025 · AGREEMENT2
Legacy
12 Aug 2025 · TM01
Termination of appointment of John Keith Davis as a director on 12 Aug 2025
31 Jul 2025 · TM01
Termination of appointment of Darrell Peter Boxall as a director on 31 Jul 2025
18 Jul 2025 · AP01
Appointment of Mr Richard Clancy as a director on 18 Jul 2025
28 Jun 2025 · CS01
Confirmation statement made on 28 Jun 2025 with updates
21 May 2025 · CH01
Director's details changed for Mr Martin John Goodwin on 21 May 2025
19 Mar 2025 · CH01
Director's details changed for Mr Martin John Goodwin on 19 Mar 2025
15 Nov 2024 · AA
Audit exemption subsiduary accounts made up to 31 Dec 2023
15 Nov 2024 · PARENT_ACC
Legacy
15 Nov 2024 · GUARANTEE2
Legacy
15 Nov 2024 · AGREEMENT2
Legacy
Showing the latest 20 of 103 filings. See the full history on Companies House
Accounting services for Seiki Systems Limited
From tax to payroll, find accountants who look after every part of Seiki Systems Limited’s finances.
Year-end accounts
Statutory accounts prepared and filed with Companies House on time, every year.
Corporation tax
CT600 returns filed with HMRC and tax planned so you only pay what you owe.
Payroll
Pay your team on time every month, with RTI submissions and pensions handled.
VAT & bookkeeping
Keep your books tidy and your VAT returns MTD-ready all year round.
Confirmation statement
Your annual confirmation statement checked and filed before the deadline.
Management accounts
Monthly or quarterly reports so you can see how the business is really doing.
More about Seiki Systems Limited
About Seiki Systems Limited
Seiki Systems Limited is a UK private limited company based in Oxfordshire, registered at Companies House as company number 04530492 since 10 Sep 2002. Its listed activities include other information technology service activities. This page brings together its public record — directors, registered office, nature of business and filing history — in one easy place.
Seiki Systems Limited filings and compliance
Every UK limited company must file annual accounts, a confirmation statement and a corporation tax return each year. Seiki Systems Limited has 103 filings on record. Keeping on top of these deadlines avoids automatic penalties from Companies House and HMRC, which start at £150 for late accounts.
Looking for an accountant in Oxfordshire?
Businesses like Seiki Systems Limited often use a local accountant for year-end accounts, corporation tax, VAT and payroll. Compare fixed-fee, regulated accountants near Oxfordshire and get free quotes in minutes.
This page shows public information from Companies House. Director of Seiki Systems Limited?
Seiki Systems Limited – frequently asked questions
What is the company number of Seiki Systems Limited?
Seiki Systems Limited is registered at Companies House under company number 04530492.
When was Seiki Systems Limited incorporated?
Seiki Systems Limited was incorporated on 10 Sep 2002 as a private limited company.
Who are the directors of Seiki Systems Limited?
Current officers are Martin Goodwin (secretary), Martin Goodwin (director), Thomas James Withers (director), Richard Clancy (director) and Harshavardhan Ramanan (director).
What does Seiki Systems Limited do?
The company's registered nature of business (SIC) is 62090 – Other information technology service activities.
Where is Seiki Systems Limited registered?
The registered office address is Gladstone House, Hithercroft Road, Wallingford, Oxfordshire, OX10 9BT.
Is Seiki Systems Limited still trading?
According to its latest Companies House record the company status is active. Its most recent filing was audit exemption subsiduary accounts made up to 31 Dec 2025 on 4 Nov 2026.