Went with these: http://www.ebay.co.uk/itm/Challenge-Strada-Tubular-Road-Tyre-Black-700x25c-RRP-70-/221680622568?pt=LH_DefaultDomain_3&hash=item339d31dbe8
Hopefully should be ok.
@amey started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Went with these: http://www.ebay.co.uk/itm/Challenge-Strada-Tubular-Road-Tyre-Black-700x25c-RRP-70-/221680622568?pt=LH_DefaultDomain_3&hash=item339d31dbe8
Hopefully should be ok.