Auxtank
The government has already said that airlines and airports should not expect any further assistance from them, except as a last resort.
https://www.bbc.co.uk/news/business-52027342
As barely three days have gone past since then, I would imagine the response is unlikely to be positive. They can take advantage of the furloughed staff schemes and other aid that is being made available. The AOA are lobbying hard on behalf of the UK airports but as you said, it is going to be a tough road ahead for aviation as a whole in the coming months and potentially years.