-
Hargreaves Lansdown service is great, a lot of their website functionality is available without an account, I'd suggest having a play. I looked at others(AJ Bell, III, Halifax) before selecting HL, other providers websites didn't compare to HL.
Tax relief is received 6-10 weeks after money is added to the account, all sorted automatically by HL.
They aren't the cheapest but I'm very happy with the service they provide here is a comparison table and also a blog that I subscribe to:
http://monevator.com/compare-uk-cheapest-online-brokers/Vanguard are yet to offer a SIPP, they expect to offer this at some point in 2018. When VG announce that they were going to offer UK accounts this year it hit HL share price as they are priced significantly lower than HL
http://citywire.co.uk/money/hargreaves-hit-as-vanguard-targets-diy-investors/a1016792HL provide a service where you select your goal (Growth or Income) and then your desired risk
http://www.hl.co.uk/funds/leave-it-to-an-expert
No worries. Also available within the SIPP is XBT Provider AB Bitcoin Tracker One for those who may want to invest in BTC.