Information needed as UKBA seems uncontactable

[chungfucius]

Here goes
I am a British Citizen by birth. My ex is Malaysian, but has the ROA as one of her parents was a British Citizen. We have 2 children (over the age on 18) who were born overseas, but have more or less lived here and attended primary/Secondary/University in UK.
They always had a ROA sticker in their passports, which had to be renewed every 5 years when the passport had to be renewed. Since the Home Office changed the processing time of ROA applications (now 6 months), I was wondering whether now would be a good time to either apply for citizenship or is there another way to do this. So basically I am not sure whether the Indefinite Leave to Remain would be an option. I am loathed for them to give up their citizenship as it may be of some use to them someday. What I am peeved off about is that we have to fork out every time they renew their passport. I have been told that some foreign nationals carry around a British ID card, just wondering whether that would be something to pursue, and if so, how.

Any help or advice gratefully welcome.

thanks

[CR001]

If you are British by birth and were born in the UK, then your children are British by descent and can apply directly for passports.

[chungfucius]

Thanks for the reply. The only thing is that I wanted them to keep their citizenship, and their mother country does not recognise dual citizenships. Hence the reason for the ROA certificate.

[vinny]

Then their only option is CoE-RoAs.

[CR001]

some foreign nationals carry around a British ID card

The card you are referring to is the foreign nationals visa called a Biometric Residence Permit.

ROA is the only way as it appears now. As they are over 18, surely it is their choice or decision which citizenship they wish to hold?