If an MP wishes to record reasons for objecting to the second reading of a Bill they can table a 'reasoned amendment'. A reasoned amendment is intended to offer reasons for rejecting a Bill. A reasoned amendment can also be moved for the third reading of a Bill.
This type of amendment would leave out all the words in the main question and add other words. A reasoned amendment is placed on the Order of Business in the form of a motion. The choice of amendments to be considered is made by the Speaker. If a reasoned amendment is agreed the Bill cannot progress any further.
Further information on bill stages and amendments can be found from the following links.