Current advice for first time uk visitor visas is to apply to visit for no more than 4-6 weeks. But I read that visas are always issued for 6 months. Does that mean if the visitor wants to stay a little longer than originally stated, there are no issues or repercussions?
TLDR : Answer Summary
There appears to be a consensus that overstaying the originally stated duration on a UK Visitor Visa does not lead to immediate repercussions during the visit. However, future visa applications may be scrutinized if the UKVI notices the discrepancy. Providing justifiable reasons for the extended stay may mitigate potential issues in subsequent applications.