Dinner Jacket + Trousers for £59, or can be bought individually £35 for the jacket and £24 for the trousers. Bought one myself, they are good quality and relatively cheap considering you could easily pay this price just to rent one.
Product details taken from website:
2 button fastening
3 button cuff
Front flap pockets
Internal and reinforced mobile phone pockets
Hook and zip fastening
Side and rear pockets