Oil pressure light.. car cut out wont start

[Adz]

Hi guys need some help if anyone has had this problem. 

Car was low on fuel driving to station 0 miles...oil pressure warning came on pulled into petrol station. Checked oil level half way. Refueled car drove 1 mile no warning lights came on..then the oil pressure light came back on then car cut out. 

Now wont start it cranks over but doesnt start seems like it not getting fuel? 

Anyone else had this problem or similar? 

Car is 07 A4 plate b7 2.0T avant quattro 

Any helps appreciated