carbon short-drop rim-brake frames taking 28mm tyres

[Foghat]

I’ve reached the point where I can no longer tolerate riding tyres narrower than 28mm on Britain’s decaying, appallingly maintained and ubiquitously coarse-chipsealed road network.

All my bikes except one are now fitted with tyres at least 28mm wide, so to get the final bike back into use I am looking for a new carbon fibre road frame that takes short-drop rim brakes but can accommodate 28mm tyres. Ideally this capability will be evidenced by real-world confirmation of such 28mm clearance.

As I’ll be transferring components from an existing 25mm-max bike (which irritatingly has brake shoes at the top of their slots and very narrow seatstay/chainstay gaps), the new frame needs to meet the following criteria. Any suggestions?

Essential criteria:
• Available as frameset only
• Standard-mount rim brakes (i.e. not direct-mount)
• Standard short-drop brakes but able to accommodate 28mm tyres (mudguard clearance not required)
• Standard 100mmF/130mmR q/r dropouts
• Only interested in new unused frames

Desirable criteria:
• BSA-threaded bottom bracket (preferred, but will reluctantly consider press-fit if can take Token/Hambini or similar type adapters)
• Replacement gear hangers also available to buy
• Below £1,000