Help with a business plan and investment pitch deck

We have a new App that goes live in the next few weeks, that I am looking to raise investment on. I am a successful and proven entrepreneur who is hugely creative at coming up with, and developing money making ideas. But I struggle with my English, particularly my grammar as well as Excel skills, and have a poor attention span when it comes to writing Business plans. I have written one that covers all the key information that is about 20 pages long, but this time I am looking for external investment so I need it turned into a highly polished, professional, and articulate plan and pitch deck that ticks all the boxes from an investors point of view. Looking for something that looks great and is articulately written, by someone who is a PROFESSIONAL at this stuff.

They will need to be based in the UK, and ideally I would like to spend some time on the phone with them once they receive my draft plan to answer any questions they have on it. I have a monetisation guide in the plan with some figures in, but no Excel spreadsheets or graphs etc.