Should I apply for my DTV visa at the London Embassy or wait until I'm back in Portugal?

Hi everyone,

I’m looking for some advice before submitting my DTV application to make sure I don't get hit with a rejection.

My situation:

* Nationality/Residency: I am a UK citizen, but I have been living legally in Portugal for the last five years.

* Current Location: I am currently back in the UK visiting family for the next month.

* The Dilemma: Am I better off applying right now to the London Embassy while I'm physically here, or should I wait until I return to Portugal and apply via Lisbon?

My documents are heavily tied to the UK, which makes me think London might be smoother:

1. Financials: My 500k THB funds are held in a UK bank account in GBP. The statement address is that of my mothers where I am currently staying.

2. Work: My company is UK-based, and I jointly own it with another director, so all my corporate/remote work proof is in English and issued in the UK.

Is there any reason why I shouldn't apply from the UK in this instance? Will the London Embassy reject me because my long-term residency is in Portugal, or will they approve it since I am a UK citizen physically present in the country with local UK documents and a UK address?

Would love to hear from any UK citizens living abroad who successfully applied while back "home" on a visit!

Thanks in advance.