Ideally I would like a 110bcd 48tooth ring in 1/8, to replicate the gearing I have currently (48*19) for riding on the road. I would then be able to choose from multiple options for a smaller 'ring for SSCX use.
The question is, am I looking for something that simply doesn't exist in the UK?
Goldtec do 5-arm 144, 135, 130 and 4-arm 104mm... http://www.mountainbikecomponents.co.uk/items.asp?CategoryID=32&Name=Goldtec+1%2F8th+Track+and+Single+Speed+Chainrings
BMX chainrings come in 110mm x 5, occasionally 1/8th
UK £11 but only up to 44t, 3/32nd
http://www.winstanleysbmx.com/product/8463/MCS_5Bolt_Chainring
48T but USA
Amazon.com: Rocket 10H BMX Chainring Black 48T 1/2 x 1/8: Sports & Outdoors