Under section 93A of the Town and Country Planning Act 1990, unimplemented planning permissions with time limits for implementation which were due to lapse between 19 August 2020 (when the provisions came into force) and 31 December 2020 are extended to 1 May 2021. This happens automatically, with no requirement to obtain Additional Environmental Approval. In this guidance, a ‘time limit for implementation’ refers to a condition which has the effect that development pursuant to a planning permission, or works pursuant to a listed building consent, must be begun not later than a certain date. In most cases, a condition (or deemed condition) imposing a time limit for implementation is attached to a planning permission by or under section 91 of the Town and Country Planning Act 1990; and to a listed building consent by or under section 18 of the Planning (Listed Buildings and Conservation Areas) Act 1990. In addition, unimplemented planning permissions with time limits for implementation which passed between 23 March 2020 and 19 August 2020 are also restored and the time limit extended to 1 May 2021, subject to Additional Environmental Approval being granted. Further details of the Additional Environmental Approval process are set out below.