If you are buying this long term you are delusional. The only one buying this are banks to later dump on you as a retail trader when brexit realizes or not. Either way the economical factors for both outcomes:
1. Brexit succeeds, good job. Country is now going to dipshits and people will run away from gbp to other currencies.
2. Brexit fails, this sheep herd of a rally will sell because it was not what the people expected.
Either way. SHORT this.