Hi. I was in a similar situation to you. I wanted to get a lease through my business but didn't realise Tesla didn't offer this. I ordered the car through inventory and then had to organise leasing before I collected.
I went with Drive Electric. There was a BIG back log and 48hr decisions were taking over a week. I was denied initially (it took a week to get to this point), so I appealed and was denied again (this took another week). DE said the lender do not provide any reason why. My company has been going for 5 years, I have a decent net profit and had cash in the bank. What I suspect it might have been is that I don't have any outgoings that improve my credit score. I don't have any outgoings apart from paying myself.
I was forced to abandon DE. Weirdly, they almost seemed happy to lose my custom. I said I was going to opt for a personal lease that I had seen on Electric Auto and gave them the chance to pricematch but they couldn't. I did my application for Electric Auto (Zen Auto) and was approved within an hour or so. They were then fantastic in helping me keep my original collection date and managed to turn everything around really quickly and efficiently.
In short, I would be weary of DE at this time as they use external lease. I see that someone has recommended Yorkshire Fleet. Definitely get in touch with them first.
Good luck!