govtech Solutions

Legacy Modernisation for UK GovTech — GDS Service Standard Built In

ClickMasters provides Legacy Modernisation for UK GovTech businesses with GDS Service Standard, WCAG 2.1 AA compliance from Sprint 1.

Updated June 20259 min readBy ClickMasters GovTech Team

Key Highlights

GovTechGDS Service Standard💷 £25,000–£150,000🔒 UK GDPR⚖️ IR35-Safe🇬🇧 UK

Compliance

GDS Service Standard
WCAG 2.1 AA
UK GDPR
G-Cloud

+2 more standards

Pricing

GovTech Legacy Modernisation£25,000–£150,000
Discovery£3,500–£8,000
Supportfrom £1,500/mo

Legacy Modernisation for GovTech — UK Specifics

GDS Assessment During Legacy Modernisation

UK government legacy modernisation projects must maintain GDS Service Standard compliance throughout the transition. Challenge: GDS assesses user-facing services — during a strangler fig migration, users may interact with both old and new interfaces simultaneously. Pattern: ensure the new service is GDS-assessed before it receives real traffic; decommission legacy only after new service passes assessment.

Business Continuity During Government System Replacement

Government systems typically cannot have planned downtime during business hours. Legacy modernisation approach: shadow mode (new system processes real transactions but outputs are validated against legacy without replacing it), canary release (1% of users redirected to new system, monitoring for errors), progressive rollout (by user group or region), and instant rollback capability maintained throughout.

Migrating Legacy Government Data with UK GDPR Compliance

Government legacy databases often contain decades of citizen personal data with poor documentation. UK GDPR-compliant migration approach: data mapping exercise (what personal data exists, where, what basis was it collected), DPIA for migration process (temporary processing in migration environment), data minimisation (do not migrate data beyond statutory retention periods), and post-migration verification (all data correctly migrated, legacy data securely deleted).

WCAG 2.1 AA for Legacy System Replacement

PSBAR 2018 requires WCAG 2.1 AA for all public sector websites — legacy systems exempt from PSBAR while they pre-date it may need remediation when rebuilt. Approach: GDS Service Standard assessment requires user research and accessibility testing, so legacy replacement is the natural point to build WCAG 2.1 AA compliance. ClickMasters uses GOV.UK Design System components as the WCAG-compliant baseline for all GovTech projects.

Compliance

GDS Service Standard

WCAG 2.1 AA

UK GDPR

G-Cloud

Cyber Essentials

business continuity

Compliance & Regulations

Every solution we build for this industry is designed to meet the following regulatory and standards requirements.

GDS Service Standard

WCAG 2.1 AA

UK GDPR

G-Cloud

Cyber Essentials

business continuity

Investment Options

Flexible engagement models tailored to your govtech project requirements.

GovTech Legacy Modernisation

£25,000–£150,000

Full engagement

  • Industry-specific approach
  • UK GDPR compliant
  • Dedicated technical lead
Most Popular
Discovery

£3,500–£8,000

Scoping

  • Industry-specific approach
  • UK GDPR compliant
  • Dedicated technical lead
Support

from £1,500/mo

Post-launch

  • Industry-specific approach
  • UK GDPR compliant
  • Dedicated technical lead

What Our Clients Say

Success stories from clients in govtech industry.

ClickMasters transformed our digital infrastructure. Their understanding of UK fintech regulations saved us months of compliance work.

S

Sarah Mitchell

CTO, FinTech Solutions Ltd

The team's expertise in NHS integrations and DTAC compliance was invaluable. They delivered on time and within budget.

D

Dr. James Cooper

Medical Director, HealthFirst UK

Their grasp of FCA requirements and insurance sector nuances helped us launch our platform 40% faster than expected.

M

Michael Brooks

CEO, InsureTech Pro

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