This is from one of the major London airport website frequently asked questions,
What quantities of liquid medication can I take with me?
Passengers are allowed to take essential medicines sufficient for the trip. Amounts under 100mls should be placed in a transparent plastic bag, with other liquids. If the container is larger than 100mls this should be presented at security for x-ray inspection. There is no limit on the amount, however you may be asked to verify the liquid by tasting, or provide verification for the product, such as a doctors letter.
I am concerned about the temperature of my medicine in the hold.
The hold areas of an aircraft have different temperatures and customers should speak to their airline to ensure the medication could be stored correctly. The airline may wish to have medicines verified by an airport pharmacist
If your still not sure give the airport a ring have a happy holiday.
Malcolm
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