Composer for SIPP Administrators
A robust administration platform designed to support complex SIPP operations at scale.
In the UK SIPP market, administrative complexity is the norm, with diverse asset types, frequent transactions and evolving retirement requirements. Composer provides a single administration platform supporting the full breadth of SIPP functionality, enabling providers to manage contributions, transfers, drawdown, crystallisation and income payments with confidence. Supporting both adviser-led and direct models, Composer underpins large-scale SIPP operations with the control, flexibility and automation needed to manage complex pension arrangements efficiently.
Support pension freedoms and retirement options
Enable drawdown, UFPLS, annuity transfers and hybrid income arrangements through controlled, auditable processes.
Manage complex SIPP investments
Support a wide range of asset types and structures, enabling administration of diverse and non-standard SIPP portfolios.
Operate across adviser and direct models
Support adviser-led activity alongside direct servicing, with consistent processing, oversight and control.
Maintain control at scale
Administer high volumes of transactions, transfers and servicing activity with strong governance and operational consistency.
SIPP Administration
Key Features
SIPP contributions and transfers
Process contributions and transfers into SIPPs, including validation, allocation and reconciliation within controlled workflows.
Crystallisation and benefit events
Manage crystallisation events, tax-free cash calculations and benefit transitions in line with pension rules.
Retirement income management
Support drawdown, UFPLS and annuity transfers, with controlled processing of income payments and benefit changes.
Complex asset administration
Administer a wide range of SIPP investments, including non-standard and illiquid assets, within a single platform.
Adviser and client servicing
Support adviser-led activity, including transactions, re-registrations and servicing, alongside direct customer interactions.
Operating model flexibility
Enable white-labelled and delegated administration models, with configurable permissions, governance boundaries and service accountability.
“We pride ourselves on the service we offer to our SIPP clients and their advisers and we will continue to deliver the best service, administration and technology we can. This continuous partnership with GBST maximises our potential as a business and helps us go beyond the expected. ”
Barnett Wadingham
GBST and Barnet Waddingham renew long-term contract
GBST will continue to power Barnett Waddingham's Self Invested Personal Pension (SIPP) administration via its Composer platform following the renewal of their agreement
Our Credentials
Moving to a new core platform doesn’t have to be high risk.
Composer is trusted by organisations running complex, high‑volume operations. Our approach to migration and ongoing operation is shaped by decades of live delivery, helping clients modernise with confidence while maintaining continuity of service.
Migrating to Composer
Our migration approach is designed to reduce disruption and complexity. Dedicated teams, proven methodologies and phased delivery models help clients move to Composer while maintaining service levels and regulatory confidence.
Proven Delivery Capability
Delivering a new platform is about more than technology. Our proven implementation methodology, experienced UK-based teams and robust governance framework help clients reduce risk, accelerate delivery and achieve successful business outcomes with confidence.
Confident SIPP administration at scale
See how Composer helps UK SIPP administrators manage complexity, scale operations and maintain regulatory confidence.
Our latest insights
Explore articles, news and insights
Media Releases
GBST advances advice modelling capability with latest WealthConnect enhancements
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Annuities are now firmly back on advisers’ radars, driven by improved rates and a renewed focus on income certainty in retirement. But while demand is rising, delivering annuity solutions is not always keeping pace.
Media Releases
GBST wins Best CASS Solution at Systems in the City Awards
GBST has been awarded Best CASS Solution at the Systems in the City Awards, recognising the strength and depth of GBST Composer in supporting CASS compliance for medium and large firms.