Virgin West Coast Trains operates a train from Bedford to Coventry hourly. Tickets cost $30 - $50 and the journey takes 30 min. Alternatively, National Express operates a bus from Bedford to Coventry every 3 hours. Tickets cost $8 - $12 and the journey takes 1 h.
From Bedford St Johns train to Bletchley, train to Milton Keynes Central, then train to Coventry. 2 h 6 min £35. From Bedford, Bus Station (Bedford Bus Station) bus to Brook Furlong, Milton Keynes Coachway then bus to Pool Meadow Bus Station. 2 h 26 min £13. From Bedford, St Paul's Square (Corn Exchange) bus to Milton Keynes Central then train to Coventry. 2 h 40 min £33. From Bedford, Bus Station (Bay C) bus to Northampton, Drapery (McDonalds), bus to Rugby, Clifton Road, then bus to Coventry, Grove St. 3 h 58 min £19. From Bedford drive to Coventry. 1 h 6 min £11.