There was a frame builder down south went under the name Merlin.
Jenny who I rode with in the Manchester Students MTB club about 92-93 had a Merlin road iron. Beautifully hand-lined lugwork and chrome a-plenty too as I recall.
Nothing to do with Merlin the cheap MTB company or Merlin the titanium high end frame manufacturer though.
EDITED.
Oh so Mercian made them did they?
What do you want for it? Looks about my size.
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Completed: 94 Stumpjumper w. M733; ; 92 Dave Yates 731 ; 97 Parkpre Pro-Elite ; Pace RC200 F6 ; Pace RC300; 82 Gios Super Record ; 97-8 De Rosa Giro D´Italia; ; Banani SPX Track bike ; 89 Alan/Mavic Cross Bike ; 05 Focus Cross Team ; 90 Look MI-80 all-Mavic ; 12 Focus Izalco Team/custom build ; 11 Focus Thunder Custom build
Projects : , Brouwer all-Mavic
Stripped : Pace RC303
Gone : GT Karakoram
Stayed in the family: Kuota Kharma, 04 Stumpjumper FSR
Ceased to be : Dynatech MT3, killed by corroded seatstays.