How do I top up my investment?

Once you've logged in:

  • Click View Account on the account you wish to make a top up on
  • Click actions (top right hand of screen)
  • Select Buy
  • Enter the amount (£ ) you want to top up any existing investment(s) and/or click to add another investment
  • Tick the box to confirm that you've read the Key Information Documents (KID) for each investment and click Next
  • Check your instructions are correct, tick to indicate your agreement to the Declaration and click Next
  • Provide your card details and confirm your investment

On receipt of the instruction, the deal will be placed at the next valuation point.

A contract note will be sent to you the next business day after the valuation point.

How can an investor top up?

From August 2025 we no longer provide the option to top up your investment online. 

You can submit investment and top up instructions via the following methods: 

Fax

You can fax an instruction to us on:

From the UK - 0330 123 3755

From abroad - 0044 1268 457731

Post

You can post an instruction to the address below:

Thesis Unit Trust Management

PO Box 12248

Chelmsford

CM99 2EG


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