Our Team

We are proud of the team we have built here – everyone is dedicated to the service we provide our clients – but we all know how to enjoy ourselves too.

Liza Casteller MICB

Director

I emigrated from South Africa to the UK in 2003 and have run my own bookkeeping business for over 20 years now both in South Africa and in the UK whilst bringing up 2 children.

In 2004 Visualize Accountants was formed. The business has grown steadily and it’s now a strong and stable company that I am very proud of.

I am the crazy one and have a great enthusiasm for the business and love the interaction with all our clients.

Most of our clients come to us on recommendation and I am the one you will meet first when you make contact. I strive to deliver a CAN-DO attitude to everyone.

When I am not working, I spend time with my family, cycling, walking, and gardening. I love socialising and having a gin with friends & family.

Kevin Brinkman MAAT FCCA

Practice Accountant

I started my accounts training at 18 years old and haven’t looked back, being proud to be both AAT and FCCA qualified.

Having worked in a variety of roles and for a varied size of accountancy firms I feel my role in Visualize lets me exploit my experience in both preparing accounts and advising on company and personal tax. I have a tragic enthusiasm for spreadsheets and love getting my teeth into some number!

When I’m not working, I spend time with family and friends and enjoy following my 3 favourite sports, Tennis, Formula 1 and Boxing. I’m a keen runner and can be seen regularly running along Southsea Seafront far too early in the morning for a sane person to be out. I take part in the Great South Run every year.

Clare Portwaine

Bookkeeper

From a corporate background working as both a Financial and Business Analyst, I have over 30 years’ experience to bring to SME’s and Sole Traders. I am also Part Qualified AAT. Having a naturally analytical, inquisitive, and organised mind helps, as well as a sense of humour!!!

When I am not getting excited about a perfectly balanced set of accounts, I enjoy the simple things in life, countryside, sea air and a good pub lunch……. throw in some live music and comedy and that is a great day!

During my time at Visualize I have been fortunate to work with clients within various industries and there is always something new to develop and learn in business.

Working with a supportive team (cliché but we are like family) you know you are at home when you’ve found your forever job.

Lyndsay Madden

Bookkeeper

Originally from South Africa, I joined Visualize in 2020. I have enjoyed everything about my job since starting and every day is different.

I have over 30 years of bookkeeping & accounting experience and I have worked in many different industries. I have also studied towards my B.com Accounting degree.

I thoroughly enjoy what I am doing and being part of the Visualize team makes it even more interesting.

I love travelling and I especially love the English countryside.

Hazel Brinkman

Bookkeeper

My decision to change career at nearly 40 years old(!) and join the welcoming and friendly team has been a good one! From an outsider point of view, you really cannot find better.

I am always keen to learn new skills and am currently studying for my AAT qualification. My past career experience is over 16 years of working in the Retail Banking sector and having achieved Cert RBCB status.

I am always keen to share my knowledge, help and educate colleagues and clients alike. I weirdly enjoy being highly organised and will always look to pass any tips or offer any help above and beyond that I can onto our clients!

Outside of Visualize, I really enjoy Pilates. I also love history, archaeology and watching Judge Judy. I have a passion for tennis and I will publicly declare my guilty pleasure is watching Rafael Nadal play!!

Amanda Wright

Bookkeeper

Compared to my team members I am a comparatively newly qualified bookkeeper. After a successful corporate career in customer services, time spent at home with the family and some volunteering, I retrained, and I am loving my decision.

I am a naturally tidy and organised person; some would say obsessive. However, it is particularly helpful with some of our clients who are less structured and fastidious with their paperwork. I am quite happy organising receipts and tracing lost expenses.

When I am not at work, I enjoy group work out classes, eating out and going to the movies. I am currently learning French and hope to get my Day Skipper sailing qualification this year.

Sarah Manns

Office Administrator & PA

I have spent over 20 years in various administration roles, in both the private and public sector.

I help to make the office run smoothly, and ensure that my colleagues are free to be able to focus on our clients, and their businesses. Visualize has been a great fit for me, working with a fun, professional, and supportive team, and an interesting variety of clients. Out of work, I love nothing more than being with my family, or to be out in the countryside, walking my dog - Simple pleasures!

Liza Casteller MICB

Director

Kevin Brinkman MAAT FCCA

Practice Accountant

Clare Portwaine

Bookkeeper

Lyndsay Madden

Bookkeeper

Sarah Manns

Office Administrator & PA

SOFTWARE & ACCREDITATIONS

Our Case Studies

What our clients say about us.

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