Two plastic bolts. I take mine off (see Robert's Cornish picture) and replace with the standard index plate for its MOT.
Tim
Tim in UK a front number plate is not required on a three wheeler (trike)
I remember looking into this following a thread on the issue last year. I'm sure it was concluded that a three wheel vehicle resembling a car with steering wheel etc. did legally require a front registration number plate. Having said that I haven't heard of anyone being stopped by police in the UK for not displaying one. Bear in mind that latest M3W's are classed as LDV.
