During the year to 31 March 2022, a company spent £80,000 on research and £120,000 on development. The development costs meet the criteria for recognition as an intangible asset and are to be amortised over 10 years on the straight line basis. Their residual value is estimated to be £nil. A full year's amortisation charge is made in the year of the expenditure.

What are the total research and development costs recognised as an expense in the year to 31 March 2022?