ASUS RT-N56U - 300Mbps Dual Band Wireless N Router. 802.11n, Fast Gigabit Ethernet, 3 Year Warranty @ amazon £78.04
Cheapest I've seen, and from Amazon so must be a decent deal.
ASUS RT-N56U - 802.11n Dual Band Gigabit WLAN Router
The revolutionary new ASUS RT-N56U is currently the latest wireless router in the industry. The model combines intuitive usage and advanced technology in a contemporary and stylish design. In addition to the ultra-slim design and stylish blue LEDs, the RT-N56U has many high-performance features such as dual-band wireless technology, high-end CPU, hardware NAT, five internal antennas, high-speed Gigabit LAN / WAN and 128 MB DDR2 memory. These features combine to provide users with unmatched performance with style.
With dual-band technology, the ASUS RT-N56U content can be specifically transmitted via WLAN, allowing the router to direct resource-intensive files such as high-definition movies on the 5-GHz WLAN band. The 5 GHz band is hardly susceptible to interference, because most household appliances such as microwaves and radio remote controls sit on the 2.4 GHz band. The ASUS RT-N56U offers twice the speed of a high-speed wireless router by 300 Mbit / s on the 2.4 GHz band, while 300 Mbit / s are on the 5 GHz band.
ASUS Ai Radar –Optimized and Reliable Wireless Coverage
This unique and efficient design drastically increases wireless signal coverage and quality without increasing power consumption. AI Radar intelligently adapts beam patterns to local conditions to enable higher-gain directional signal emulation. Ai Radar shapes signals to offer the strongest possible output, transforming what may be a weak omnidirectional signal to a stronger unidirectional one, improving throughput at same time.