My pregnancy history is awful 2live children 16 and 14 8misscarriages and an eptopic pregnancy now im 7weeks can i make them give me a reasurance scan?

Likely not: As long as you are doing well there may be no medical reason to scan you at this stage.

Unknown: The problem with government run healthcare is that sometimes the desires of patients take second place to their desire to reduce costs. In the us there would not be a problem, at least today. That's the difference between a consumer driven system and a government run program. You can always ask but don't be surprised if they put you off until at least 14 wks, if they do one at all.