Firstly, there can be quite a bit of paperwork involved in applying for one of their mortgages. In addition to this, they often require high deposits which could prove difficult for those on limited incomes. Finally, processing times can take up to 3 months or more - something that may be too long for some prospective buyers.
Nevertheless, if you're willing to put in the effort and research into finding the right deal then BMBTLM can still be an excellent choice.
Birmingham Midshires Mortgage