Thank you for your prompt reply!The only time I have heard someone getting an exemption is through your university. However, this was sometime ago now and I think universities are much less likely to do it for fear of getting their Tier 4 licences revoked. I would speak to your university in the first instance.
You could also ask the firm whether you could start a week later based on this issue, but in all honesty missing the first week is the most troublesome week to miss.
The firm’s answer is likely just to move you the the later scheme, but if you cannot do that and won’t renege it is best to explain that upfront the the firm.
I am presently located outside the UK and would be doing the vac scheme remotely. Given that I am not located in the UK (and hence visa restrictions may not apply), do you happen to know if the 20-hour limit would still apply?