Halma PLC

Regulatory Filings • May 15, 2020

All Correspondence to: Computershare Investor Services PLC

The Pavilions, Bridgwater Road Bristol, BS99 6ZY Tel: +44 (0)370 707 1046

Shareholder Reference Number (SRN)

Help reduce the environmental impact of your communications

Dear shareholder

As a shareholder, you can help reduce the environmental impact of your communications by choosing to receive your shareholder communications in electronic form.

The Companies Act allows the default option for receiving and accessing shareholder communications (including your annual report) to be via a company's website. You now have the choice of receiving an email when your annual report and other shareholder communications become available or continuing to receive a printed copy.

Please select one of the options opposite

If you do not indicate your preference to us by 30 June 2020 shareholder communications will be supplied to you by means of the website and information on accessing your shareholder communications online will be posted to you at the time of the mailing.

If you have any questions about this letter please refer to the back of this letter for more details.

Yours sincerely

Mark Jenkins Company Secretary, Halma plc

What are your options?

Option 1 Elect for ecommunications

www.investorcentre.co.uk/ ecomms

Alternatively provide us with your e-mail address on the form overleaf.

You will receive an email notification when your shareholder communications become available online.

Option 2

To continue receiving printed copies of your shareholder communications please complete and return the form on the reverse.

Like the sound of ecommunications?

You can also manage your shareholding online. Investor Centre is our free self-service website. Register at www.investorcentre.co.uk and manage your shareholding with ease!

Computershare Investor Services PLC (CIS PLC) is authorised and regulated by the Financial Conduct Authority. CIS PLC is registered in England & Wales, Company No. 3498808, at: The Pavilions, Bridgwater Road, Bristol BS13 8AE.

Please make your selection

Receive email notifications when your shareholder communications are available online Please submit your email address and SRN by visiting our Investor Centre website:

www.investorcentre.co.uk/ecomms

SRN: ! YOUR SRN IS IMPORTANT, PLEASE KEEP IT IN A SAFE PLACE.

By providing your email address and SRN above you will no longer receive paper copies of annual reports or other communications that are available electronically. Instead you will receive emails advising you when and how to access documents online.

Alternatively enter your email address below and send this form back in the enclosed reply paid envelope.

How to complete this form

Please use a black pen. Print in CAPITAL letters inside the boxes as shown in this example.

	35.85 22.85		288	22.655 683 33 2-20-20	22.85 56.255 -8.988 22.652 22.82 56.255 22.852 0588 20,00						2017 88 22.60 2288 33	25-25-22 20000 0.655 20-2017		858-859	2-26-20 2222 200 30 855 288 222	2222 2005 85838 88838 333 200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	38.00 20.05 2000	333 38.95 22.65 200000 555-55 2000	2222
25-25-5		88.60 交易	335 ,	20-50-50 23.0	a o para o para o ma a para a para a para a para a mara a ma in 28.88 8.65 25.25 22.85 -2.600 22.85 22.255 2000			22-2005	28.88 200 3683 233		33 22.88 33	883 22-22-2 255 0.62 50-52-52	28.88 22.83 20,000	88.88 255 200	2552	2-22-2 838 233	2288 50-200 13835 333	2000 222.65 255-25- 2000
55.255	230	3288 200 20 2235 22.85	2000 222	835	200 22.85 58.988 22.85 22.65 200 25.85 22.85	2555	0000 2000		25.85 25-255	22.85	22 22.00 200	20-2000 200 0.652 200 25-2332	2285	22.00		1 855	2555	2000 2555 23.50 2000 25-55	23 882 8838

Continue receiving a printed copy of all your communications.

To continue to receive a printed copy of the annual report and other shareholder communications please cross this box and send this letter back to us in the enclosed reply paid envelope.