There is a range of insect repellents available, specially designed for backpackers and travellers, to help keep those nasty bugs at bay.
There are areas in the UK where you need protection from insects, but when travelling abroad this can be even more important.
Mosquito Nets & Repellents
As a first line of defence, you might want to consider mosquito nets, designed to stop the insects getting near to your skin.
It is worth treating the net with insect repellent to stop insects crawling around the net and maybe finding a way in. Some nets are pre-treated.
Deet & Permethin Sprays
As a second line of defence, and for use on exposed areas like wrists and ankles during the day, you should consider sprays for your skin to deter them from biting. Insects can bite through thin clothing, so it may be worth using sprays for use on your clothing to prevent this.