Computer Systems Integration Limited company overview
Computer Systems Integration Limited is a private limited company registered with company number 01748591. It was incorporated on 26 Aug 1983 and its current status is active.
The registered office is at 6 Mitre Passage, Greenwich Peninsula, London, SE10 0ER. The company has 4 active officers. It was previously called Dcs Eintegration Limited and 2 other names.
Computer Systems Integration Limited upcoming deadlines
Year end accounts
Due 30 Sep 2027
Confirmation statement
Due 3 Apr 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.
Computer Systems Integration Limited at a glance
43 years
Trading age
15,783 days since incorporation
4
Active officers
Michele, Elizabeth, Darren, David
264
Filings on record
Latest: 26 Oct 2026
100/100
Filing health score
Accounts and statement up to date
Directors of Computer Systems Integration Limited
Former officers
27 more officers are on the register. See all on Companies House
Nature of business (SIC codes)
62090
Other information technology service activities
Allowable expenses for Computer Systems Integration Limited
Based on Computer Systems Integration 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 Computer Systems Integration 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 Computer Systems Integration 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 London?
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 Computer Systems Integration 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
26 Oct 2026 · AA
Audit exemption subsiduary accounts made up to 31 Dec 2025
26 Oct 2026 · PARENT_ACC
Legacy
26 Oct 2026 · AGREEMENT2
Legacy
26 Oct 2026 · GUARANTEE2
Legacy
5 Oct 2026 · MR01
Mortgage create with deed with charge number charge creation date
5 Oct 2026 · MR01
Mortgage create with deed with charge number charge creation date
1 Apr 2026 · CS01
Confirmation statement made on 20 Mar 2026 with updates
11 Dec 2025 · PSC07
Cessation of a person with significant control
11 Dec 2025 · PSC02
Notification of a person with significant control
31 Oct 2025 · AD01
Registered office address changed on 31 Oct 2025
25 Jul 2025 · AD03
Move registers to sail company with new address
25 Jul 2025 · AD02
Change sail address company with new address
23 Jul 2025 · AA
Full accounts made up to 31 Dec 2024
7 Apr 2025 · MA
Memorandum articles
7 Apr 2025 · RESOLUTIONS
Resolutions
4 Apr 2025 · CS01
Confirmation statement made on 20 Mar 2025 with no updates
1 Apr 2025 · AP01
Appointment of David Adam Neff as a director on 28 Mar 2025
31 Mar 2025 · TM01
Termination of appointment of Alan Arthur Watkins as a director on 28 Mar 2025
31 Mar 2025 · TM01
Termination of appointment of Kevin Lewis as a director on 28 Mar 2025
31 Mar 2025 · TM01
Termination of appointment of Sandip Singh Channa as a director on 28 Mar 2025
Showing the latest 20 of 264 filings. See the full history on Companies House
Accounting services for Computer Systems Integration Limited
From tax to payroll, find accountants who look after every part of Computer Systems Integration 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 Computer Systems Integration Limited
About Computer Systems Integration Limited
Computer Systems Integration Limited is a UK private limited company based in London, registered at Companies House as company number 01748591 since 26 Aug 1983. 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.
Computer Systems Integration Limited filings and compliance
Every UK limited company must file annual accounts, a confirmation statement and a corporation tax return each year. Computer Systems Integration Limited has 264 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 London?
Businesses like Computer Systems Integration Limited often use a local accountant for year-end accounts, corporation tax, VAT and payroll. Compare fixed-fee, regulated accountants near London and get free quotes in minutes.
This page shows public information from Companies House. Director of Computer Systems Integration Limited?
Computer Systems Integration Limited – frequently asked questions
What is the company number of Computer Systems Integration Limited?
Computer Systems Integration Limited is registered at Companies House under company number 01748591.
When was Computer Systems Integration Limited incorporated?
Computer Systems Integration Limited was incorporated on 26 Aug 1983 as a private limited company.
Who are the directors of Computer Systems Integration Limited?
Current officers are Michele Brookes (secretary), Elizabeth Ann Dellinger (director), Darren Ellis (director) and David Adam Neff (director).
What does Computer Systems Integration Limited do?
The company's registered nature of business (SIC) is 62090 – Other information technology service activities.
Where is Computer Systems Integration Limited registered?
The registered office address is 6 Mitre Passage, Greenwich Peninsula, London, SE10 0ER.
Is Computer Systems Integration 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 26 Oct 2026.