Upvote:1
In general, other countries won't have the information that you were refused entry to the UK. So the mere fact of your refusal won't be a problem.
What may be a problem is the reason you were refused entry. If the same reason applies in future, other countries may wish to refuse you entry too.
Edit: I see there was a refusal stamp in your passport. That could make things more difficult. You may get asked about it; tell them you didn't realize you needed pre-booked accommodation. Make sure that next time you have pre-booked (at least for the first few days). I would also suggest not planning a trip of six months (that is a very long tourist trip. Also try going to places (in Africa for example?) that are less concerned about people trying to enter the country illegally.
Upvote:2
I have been refused a UK Tourism visa with a refusal stamp on my passport, since then I have applied for Canadian, USA, and russian visas and got them all. I applied again for UK tourist visa and I have been refused again. I guess this may impact your future UK Visa application but not so much the applications for other visas