What can be done if your customer is not paying your invoices? (Part II)

Dear Sir/Madam,

I worked as a broadcast and event management consultant and ran large scale sports entertainment events for a UAE based client but my invoice for labour and material expenses remain unpaid after six months.

My client claims they are restructuring and are hoping to pay me but what can I do to help recover my money? I am UK based.

Any advice appreciated. Many thanks.