Buyer's Guide

HOW TO CHOOSE
IT SUPPORT

Complete guide to evaluating and selecting the right IT support provider for your London business. Learn the 5 critical factors that separate good providers from great ones.

Selecting an IT support provider is one of the most important technology decisions your business will make. Unlike hiring an accountant or consultant, your IT provider works alongside your team daily, managing systems, security, and infrastructure critical to your operations.

This guide walks you through the 5 essential factors to evaluate — ensuring you choose a partner that's reliable, secure, and aligned with your business needs.

The 5 Critical Factors

Factor 1: Background & Credentials

Company registration & legitimacy — is it an established company or sole trader?
Years in business — 5+ years minimum is a safety indicator
Certifications — ISO 9001 (quality), ISO 27001 (security), Microsoft Partner status
Industry memberships — CompTIA, BCS, or similar professional bodies
Google research — check for bad reviews, complaints, or regulatory issues

Factor 2: Team Expertise & Size

Team size matters — providers with 30-100+ staff have better redundancy and expertise
Meet key staff — request calls with account managers, service desk managers, senior engineers
Communication style — can they explain technical concepts in plain English without jargon?
Staff retention — high turnover signals poor company culture and inconsistent service
Specialism — do they have expertise in your industry (legal, finance, healthcare, etc.)?

Factor 3: Reviews & References

Third-party review sites — Feefo, Google Reviews, Trustpilot, industry-specific platforms
Read individual reviews — not just star ratings; look for patterns in complaints
Request references — ask for 3+ clients similar to your business
Case studies — does the provider publish detailed success stories?
Customer retention — how many clients leave vs stay long-term?

Factor 4: Contracts & SLAs

Contract length — maximum 12 months; avoid multi-year locks
Exit clauses — can you leave with reasonable notice (30-90 days)?
Service Level Agreements (SLAs) — explicit response & resolution times (e.g., ≤1hr critical)
Scope clarity — what's included? What costs extra? No hidden fees
Change management — how do they handle upgrades, replacements, or customization?

Factor 5: Onboarding & Support Model

Onboarding process — free assessment, migration, zero downtime guarantee?
Dedicated account manager — single point of contact for consistency
Support hours — 24/7, 9-5, or business hours? Emergency escalation procedures?
Remote vs onsite — remote response time for urgent issues?
Training & handoff — will they train your team? Transition documentation?

Red Flags vs Green Flags

Red Flags to Avoid

Sole trader or very new company (< 2 years)

No published SLAs or vague response times

Pressure to sign multi-year contracts with long lock-in periods

No references or reluctance to provide them

Pushy sales approach without proper discovery/needs analysis

Promises of "50% cost savings" without understanding your current setup

No published certifications or credentials

Cannot explain how they'll ensure data security

Poor reviews or patterns of complaints about communication

Green Flags to Seek

Free comprehensive IT audit before any commitment

30-90 day break clauses with reasonable notice

Published pricing & clear SLAs

4.5+ star reviews with detailed positive feedback

Team of 30+ with multiple office locations

ISO 27001, ISO 9001, Microsoft Partner status

Detailed case studies with named clients

24/7 support available; ≤1hr response for critical issues

Transparent onboarding timeline with zero-downtime guarantee

Ready to Find Your IT Partner?

Coreitech checks all the boxes — established provider, ISO certified, 4.9★ rated, 24/7 support, flexible contracts, free audit.

Start Your Free IT Audit

HOW TO CHOOSEIT SUPPORT