Travel back to the eighties at Marylebone

In the eighties you would never have seen a rail operation like the Wrexham & Shropshire. But if blue and grey BR InterCity carriages make you nostalgic for your Hornby train set, how about a chance to ride in the real thing, on a ludicrously-short express train from Marylebone to the Welsh Marches and beyond. Three unprototypically-clean Mk3 coaches and a class 67 loco? OK, the engine's an anachronism, but Mr Hornby must have the boxed set ready to roll...