Subject to certain provisos you have a claim against them for your loss.
This area of law is called negligent mis statement.
You have a cause of action against them subject to certain conditions
You will need to produce evidence that the advice was given unless they fail to dispute it.
You will need to show that the advice was not equivocal.
And the relationship must be of an advisor whose judgment you are reasionably entitled to rely upon (for example accountant and client).
Finally you will need to be able to show how the loss occurred and justify the amount.
I would start with a letter setting out the claim which states at the end that unless you receive the sum within a certain deadline such as 7 or 14 days you will commence County Court proceedings against them for the sum plus costs and interest without further recourse to them.
A claim would be allocated to small claims track by the court where the procedure is pretty straightforward and you can commence a claim online.
The search engine on your computer will bring it up if you put in "commencing proceedings online uk" or something similar.
I hope this helps if there are any further points please reply and I will be happy to respond.