Open university courses - law in particular

I am umming and ahhing about signing up to an open university course in law. I currently run a business on behalf of a large company but I do not have a degree or anything and have worked my way up. Eventually I would like to go into HR or the legal side of things if the opportunity arose. I have been looking at a part time degree in law which will take 6 years and to get the business law on top I would need the masters potentially another 2 or 3 years. It will cost a fair amount of money but they do pay monthly plans making it a bit easier as I am no longer eligible for a student loan etc. has anyone here studied with the open university or have experience in business law etc? If so is this something worth pursuing or is it just money down the drain. We are planning a honeymoon November next year so will be an expensive year but if I am to enrol I don't want to delay as I am not far off 27 and am conscious of how long the degree and masters will take. Any advice/tips would be welcome!