I have refused your application for a visit visa because I am not satisfied that you meet the requirements of paragraph V4.2 of Appendix V: Immigration Rules for Visitors because:
I acknowledge that you have travelled to the UK on several previous occasions. However, from the information you have provided I am satisfied your intentions in applying for this latest visa are different from those at the time of your previous visits.
You have applied for a 5 year visa and indicated that you intend to spend 6 month in the UK each year. This would mean you spending 2.5 years in the UK over the duration of this visa. I am satisfied from the information you have provided that it is your intention to live in the UK for extended periods through frequent or successive visits.
You have stated at question 68 that the reason you want to travel to the UK is to help your daughter to bring up her children and to take a vacation. You have separately provided a doctors letter regarding your daughters current state of health and a letter from your daughter that her health is poor and you will help with every day family responsibilities. While I acknowledge both the importance of family visits and have considered the compassionate nature of the points you have raised I am not satisfied the reasons for your travel and the frequency and duration of your visits meet the requirements of Appendix V of the Immigration Rules.
Appendix 3 of Appendix V lists the activities that are permitted by visitors. This includes a variety of business related activities as well as travelling for tourism or visiting family and friends. It does not include the provision of long term child care. I accept that it is reasonable for visiting family members to assist in the home including caring for children during short visits but what you have detailed goes well beyond that. Your assistance appears to be of a long term nature and it is not clear what provisions are in place for the periods where you would not be in the UK. I am satisfied that the duration specified by you over which this support would be provided would constitute employment even if that employment was not paid. I am not satisfied that the reasons for your travel are amongst those permitted by Appendix 3 of Appendix V.
In light of the above, I am not satisfied that you are seeking entry as a genuine visitor or that you intend to leave the UK on completion of your visit. I am not satisfied that you do not intend to remain in the UK for extended periods through frequent or extended visits or that the reasons for your visit fall amongst those permitted by Appendix 3 of Appendix V. V4.2 (a, b, c)
I have therefore refused your application because I am not satisfied, on the balance of probabilities, that you meet all of the requirements of the relevant Paragraph of the United Kingdom Immigration Rules.