Hi,

I’ve been offered a place for PhD but without funding. From the advice I got here I understand that self-funding is not really an option. So if I were to defer and apply for scholarships again next year, I want to know what I can do in the meantime.

I received 2:1 and Merit from my previous studies and I have about 2 years of relevant work experience. My research topic was a good fit with the supervisors and they said my proposal was very strong.

What do you think I can do to build a stronger application?

I am not speaking from experience so take what I say with a pinch of salt.

You can probably work on improving your research proposal as it will be the main way of assessing your funding application. Do a small literature review, clearly identify your research gap and have a clear methodology.
I would also ask your potential supervisor about potential funding avenues and investigate your best options so that you can apply early and often. Different funding bodies have different requirements or focus, so you want to be prepared.
You should consider other universities as well. I understand you have been accepted to one university but some universities have more internal money than others and you don't want to get stuck at an underfunded university. The results from REF should be coming out this year and that might start a deluge of funding opportunities, as some universities have held off internal funding until it is over.
If you have the time, you could start working on small side projects, maybe in conjunction with your supervisor and get some raw data or a small paper. Though it isn't necessary and is very time consuming with a small chance of paying off

Hopefully other people can give you more advice.