An excellent stand and I believe it is a record for Headingly. They would have a long way to go to beat the record for any 8th wicket partnership in 1st class cricket. According to my 2001 copy of Wisden, the highest ever was 433.

The highest I can find for a test match is a partnership of 313 between Wasim Akram and Saqlain Mushtaq - Pakistan v Zimbabwe 1996-97.

The highest I can find involving England is one of 246 between L E G Ames and G O B Allen - England v New Zealand 1931.