Short term instant access saving of £150k

[Bertrum]

We have just sold a rental and need somewhere to stick/split between banks £150k for 3 months or so while we find a house to buy.

Thinking £50k in premium bonds

£70k in a Nationwide Savings account at 1%

£30k in a Tesco Savings account at 1%

Anywhere that offers better for instant access?

[51mes]

1.5% on 20K in a Santander 123 Account?