How do I write a letter to HMRC claiming higher rate tax relief?

I understand I can write to HMRC to get tax relief on my pension contributions instead of waiting to do a tax return.

Would this letter do the trick? and what address to I sent it to?

Date: [Current date]

Dear Sir/Madam

I hereby claim higher-rate tax relief in respect of contributions made
to personal pension plans.

I am claiming for year [Tax Year Start] to [Tax Year End], my NI no.
is [National Insurance No]

My gross annual contribution will be £[Total amount of my
contributions, not including employer’s contribution, or basic rate tax
relief]

My personal monthly contributions will continue at the same rate
£[Amount I intend to contribute each month, not including employers contributions or basic rate tax relief]

Yours faithfully,