This is what I've come up with for slightly over, if I need to upgrade mobo/cpu it will be to an overclockable board so might as well go for h81. Also I feel that an SSD is needed and I want to run games on it, I have a 400gb drive lying around for other games.
PCPartPicker part list / Price breakdown by merchant
CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor (£137.36 @ Ebuyer)
Motherboard: MSI H81M-E34 Micro ATX LGA1150 Motherboard (£34.68 @ CCL Computers)
Memory: Kingston 8GB (2 x 4GB) DDR3-1600 Memory (£35.47 @ CCL Computers)
Storage: Sandisk SSD PLUS 240GB 2.5" Solid State Drive (£59.99 @ Amazon UK)
Video Card: PowerColor Radeon R9 280X 3GB TurboDuo Video Card (£176.33 @ CCL Computers)
Case: Cooler Master N200 MicroATX Mid Tower Case (£28.90 @ Amazon UK)
Power Supply: EVGA 500W 80+ Bronze Certified ATX Power Supply (£36.98 @ Scan.co.uk)
Total: £509.71
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-07-08 20:58 BST+0100