Change of Address during application - Online or by Post?

[sr33]

Hi,
My application for Tier 1 (general) extension is under process and I'm changing my address.
I see two options to notify UKBA about this:

1. Online:
http://www.ukba.homeoffice.gov.uk/about ... geAddress/

2. Post the Change of Circumstances form:
http://www.ukba.homeoffice.gov.uk/visas ... s/#header1

The online option seems simple and fast. I read the guidelines and both seem fine (except the Change of Circumstances can be used for a lot of other changes.)

Can anyone who has tried the online form weigh in with your opinion please?

Thanks in advance.

[sr33]

Replying to my own post as this may be helpful to others. Here's what I found from the leaflet about BRP.

If you have made an immigration application that also required you to apply for a biometric residence permit and you have not yet received a letter telling you a biometric residence permit will be sent to you, but have changed, or will be changing , your address before you receive your biometric residence permit, you must tell us immediately by completing a Change Of Address (COA) form.
This can be found online at: COA form

If you have made an immigration application that also required you to apply for a biometric residence permit, and change your address at any time after you have received your biometric residence permit, and you think you are likely to be at the new address for at least 6 months, you must tell us, by completing a Migrant Change of Circumstances (MCC) form. This can be found online at: MCC form