In reply to mike123:
My understanding is that the Scottish Govt plans to return to a local 'tiers' system from the end of April, with most of Scotland in Tier 2 or Tier 3 (albeit with tougher restrictions in each tier than previously). They will then relax progressively, allowing at least 3 weeks between Tier.
However, I had a look at the Scottish Covid 'Routemap', and even if they get down to Tier 0 (less than 20 cases per 100,000), there is still no non-essential travel allowed to and from the rest of the UK!
So I think, if you live in England, there is no chance of skiing in Scotland this season