www.hpa.org.uk/infections/topics_az/malaria/guidelines.htm
for the UK Malaria Guidelines, formulated by the Advisory Committee on Malaria Prevention in UK Travellers (ACMP). Has section on this page considering malaria prophylaxis in the first 3 months of pregnancy

www.travax.nhs.uk/            
Fit for Travel section of this site is for (free) public access, including indication of what vaccinations to consider for each chosen individual country. More detailed information is available for healthcare professionals on subscription basis including up to date country-specific malaria prophylaxis recommendations

www.nathnac.org           
Useful   Frequently asked questions section regarding enquiries about malaria prophylaxis, including during pregnancy . Also has link to HPA (health protection agency) website and current UK Malaria Guidelines

www.masta.org           
On subscription basis, health care professionals can access information on country-specific malaria prophylaxis via MASTA health brief service (the brief gives extensive advice on avoiding other health risks in chosen country - both vaccine-preventable and non-vaccine preventable) OR for a fee of £3.99 each time can draw off relevant information each time visit the site

www.traveldoctor.co.uk
For FREE public access click on malaria page on left hand side of homepage for useful information  - including world map indicating areas of chloroquine resistant regions (i.e. where Chloroquine &/or Proguanil regimens are not adequate to prevent malaria infection). Also has chart showing child dosages for malaria prophylaxis - indicating at what weight (more accurate guide than age) what dose should be given. Also has section highlighting contra-indications for different types of malaria prophylaxis (but note in addition to those listed Mefloquine should not be given to those with psychiatric conditions or depression)