There can be many reasons for not including someone in a will – relationship breakdown, a desire to benefit someone else who the testator feels has greater need etc.  A court will consider the deceased’s wishes and reasons as part of their evaluation of the claim and when applying the relevant s3 criteria (see here) particularly the ‘any other matter’ and the deceased’s ‘obligations’ criterion.  However, this will have no more weight than any of the other criteria.   A court is not bound by the deceased’s reasons or wishes and can make an order for provision regardless.